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68687675 = 5273891009
BaseRepresentation
bin1000001100000…
…01011100111011
311210020200202222
410012001130323
5120041001200
610452114255
71462556420
oct406013473
9153220688
1068687675
1135855081
121b00598b
13112cc3c4
14919dd47
15606bd85
hex418173b

68687675 has 24 divisors (see below), whose sum is σ = 97687200. Its totient is φ = 46932480.

The previous prime is 68687579. The next prime is 68687699. The reversal of 68687675 is 57678686.

It is not a de Polignac number, because 68687675 - 218 = 68425531 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67571 + ... + 68579.

It is an arithmetic number, because the mean of its divisors is an integer number (4070300).

Almost surely, 268687675 is an apocalyptic number.

68687675 is a deficient number, since it is larger than the sum of its proper divisors (28999525).

68687675 is a wasteful number, since it uses less digits than its factorization.

68687675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415 (or 1410 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 53.

The square root of 68687675 is about 8287.8027848158. The cubic root of 68687675 is about 409.5368058782.

The spelling of 68687675 in words is "sixty-eight million, six hundred eighty-seven thousand, six hundred seventy-five".

Divisors: 1 5 7 25 35 175 389 1009 1945 2723 5045 7063 9725 13615 25225 35315 68075 176575 392501 1962505 2747507 9812525 13737535 68687675