64695539 has 2 divisors, whose sum is σ = 64695540. Its totient is φ = 64695538.

The previous prime is 64695511. The next prime is 64695569. The reversal of 64695539 is 93559646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64695539 - 2⁸ = 64695283 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64695493 and 64695502.

It is not a weakly prime, because it can be changed into another prime (64695569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32347769 + 32347770.

It is an arithmetic number, because the mean of its divisors is an integer number (32347770).

Almost surely, 2^64695539 is an apocalyptic number.

64695539 is a deficient number, since it is larger than the sum of its proper divisors (1).

64695539 is an equidigital number, since it uses as much as digits as its factorization.

64695539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800, while the sum is 47.

The square root of 64695539 is about 8043.3537159570. The cubic root of 64695539 is about 401.4438217597.

The spelling of 64695539 in words is "sixty-four million, six hundred ninety-five thousand, five hundred thirty-nine".