68692537 has 2 divisors, whose sum is σ = 68692538. Its totient is φ = 68692536.

The previous prime is 68692523. The next prime is 68692567. The reversal of 68692537 is 73529686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61638201 + 7054336 = 7851^2 + 2656^2 .

It is a cyclic number.

It is not a de Polignac number, because 68692537 - 2⁷ = 68692409 is a prime.

It is not a weakly prime, because it can be changed into another prime (68692517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34346268 + 34346269.

It is an arithmetic number, because the mean of its divisors is an integer number (34346269).

Almost surely, 2^68692537 is an apocalyptic number.

It is an amenable number.

68692537 is a deficient number, since it is larger than the sum of its proper divisors (1).

68692537 is an equidigital number, since it uses as much as digits as its factorization.

68692537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 68692537 is about 8288.0961022421. The cubic root of 68692537 is about 409.5464685577.

The spelling of 68692537 in words is "sixty-eight million, six hundred ninety-two thousand, five hundred thirty-seven".