65713631 has 2 divisors, whose sum is σ = 65713632. Its totient is φ = 65713630.

The previous prime is 65713607. The next prime is 65713649. The reversal of 65713631 is 13631756.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65713631 - 2²² = 61519327 is a prime.

It is a super-2 number, since 2×65713631² = 8636562598408322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65713601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32856815 + 32856816.

It is an arithmetic number, because the mean of its divisors is an integer number (32856816).

Almost surely, 2^65713631 is an apocalyptic number.

65713631 is a deficient number, since it is larger than the sum of its proper divisors (1).

65713631 is an equidigital number, since it uses as much as digits as its factorization.

65713631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 32.

The square root of 65713631 is about 8106.3944512958. The cubic root of 65713631 is about 403.5386668593.

The spelling of 65713631 in words is "sixty-five million, seven hundred thirteen thousand, six hundred thirty-one".