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68705371 = 79815053
BaseRepresentation
bin1000001100001…
…01110001011011
311210021121001101
410012011301123
5120042032441
610452332231
71462662130
oct406056133
9153247041
1068705371
11358673a9
121b014077
1311307487
1491a6587
156072231
hex4185c5b

68705371 has 4 divisors (see below), whose sum is σ = 78520432. Its totient is φ = 58890312.

The previous prime is 68705341. The next prime is 68705383. The reversal of 68705371 is 17350786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68705371 - 29 = 68704859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68705371.

It is not an unprimeable number, because it can be changed into a prime (68705341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4907520 + ... + 4907533.

It is an arithmetic number, because the mean of its divisors is an integer number (19630108).

Almost surely, 268705371 is an apocalyptic number.

68705371 is a deficient number, since it is larger than the sum of its proper divisors (9815061).

68705371 is an equidigital number, since it uses as much as digits as its factorization.

68705371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9815060.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 68705371 is about 8288.8703090349. The cubic root of 68705371 is about 409.5719725028.

The spelling of 68705371 in words is "sixty-eight million, seven hundred five thousand, three hundred seventy-one".

Divisors: 1 7 9815053 68705371