64975331 has 2 divisors, whose sum is σ = 64975332. Its totient is φ = 64975330.

The previous prime is 64975321. The next prime is 64975363. The reversal of 64975331 is 13357946.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64975331 - 2¹⁴ = 64958947 is a prime.

It is a super-2 number, since 2×64975331² = 8443587277119122, which contains 22 as substring.

It is a Chen prime.

It is equal to p_3839195 and since 64975331 and 3839195 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (64975321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32487665 + 32487666.

It is an arithmetic number, because the mean of its divisors is an integer number (32487666).

Almost surely, 2^64975331 is an apocalyptic number.

64975331 is a deficient number, since it is larger than the sum of its proper divisors (1).

64975331 is an equidigital number, since it uses as much as digits as its factorization.

64975331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 38.

The square root of 64975331 is about 8060.7276966785. The cubic root of 64975331 is about 402.0217041490.

The spelling of 64975331 in words is "sixty-four million, nine hundred seventy-five thousand, three hundred thirty-one".