64359931 has 2 divisors, whose sum is σ = 64359932. Its totient is φ = 64359930.

The previous prime is 64359929. The next prime is 64359947. The reversal of 64359931 is 13995346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64359931 - 2¹ = 64359929 is a prime.

It is a super-2 number, since 2×64359931² = 8284401436649522, which contains 22 as substring.

Together with 64359929, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64359901) 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, 32179965 + 32179966.

It is an arithmetic number, because the mean of its divisors is an integer number (32179966).

Almost surely, 2^64359931 is an apocalyptic number.

64359931 is a deficient number, since it is larger than the sum of its proper divisors (1).

64359931 is an equidigital number, since it uses as much as digits as its factorization.

64359931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 40.

The square root of 64359931 is about 8022.4641476295. The cubic root of 64359931 is about 400.7484549146.

The spelling of 64359931 in words is "sixty-four million, three hundred fifty-nine thousand, nine hundred thirty-one".