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67695345 = 345167149
BaseRepresentation
bin1000000100011…
…11001011110001
311201101021120000
410002033023301
5114312222340
610414540213
71451254344
oct402171361
9151337500
1067695345
1135237573
121a807669
1311042823
148dc245b
155e22d30
hex408f2f1

67695345 has 20 divisors (see below), whose sum is σ = 121350900. Its totient is φ = 36103968.

The previous prime is 67695323. The next prime is 67695349. The reversal of 67695345 is 54359676.

It can be written as a sum of positive squares in 2 ways, for example, as 9585216 + 58110129 = 3096^2 + 7623^2 .

It is not a de Polignac number, because 67695345 - 27 = 67695217 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 67695345.

It is not an unprimeable number, because it can be changed into a prime (67695349) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 83170 + ... + 83979.

It is an arithmetic number, because the mean of its divisors is an integer number (6067545).

Almost surely, 267695345 is an apocalyptic number.

It is an amenable number.

67695345 is a deficient number, since it is larger than the sum of its proper divisors (53655555).

67695345 is a wasteful number, since it uses less digits than its factorization.

67695345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167166 (or 167157 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 67695345 is about 8227.7180919135. The cubic root of 67695345 is about 407.5550404282. Note that the first 3 decimals are identical.

The spelling of 67695345 in words is "sixty-seven million, six hundred ninety-five thousand, three hundred forty-five".

Divisors: 1 3 5 9 15 27 45 81 135 405 167149 501447 835745 1504341 2507235 4513023 7521705 13539069 22565115 67695345