64064731 has 2 divisors, whose sum is σ = 64064732. Its totient is φ = 64064730.

The previous prime is 64064699. The next prime is 64064761. The reversal of 64064731 is 13746046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64064731 - 2⁵ = 64064699 is a prime.

It is a super-2 number, since 2×64064731² = 8208579516204722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64064693 and 64064702.

It is not a weakly prime, because it can be changed into another prime (64064761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32032365 + 32032366.

It is an arithmetic number, because the mean of its divisors is an integer number (32032366).

Almost surely, 2^64064731 is an apocalyptic number.

64064731 is a deficient number, since it is larger than the sum of its proper divisors (1).

64064731 is an equidigital number, since it uses as much as digits as its factorization.

64064731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 64064731 is about 8004.0446650428. The cubic root of 64064731 is about 400.1348108100.

The spelling of 64064731 in words is "sixty-four million, sixty-four thousand, seven hundred thirty-one".