64765031 has 2 divisors, whose sum is σ = 64765032. Its totient is φ = 64765030.

The previous prime is 64765007. The next prime is 64765037. The reversal of 64765031 is 13056746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64765031 - 2⁶ = 64764967 is a prime.

It is a super-2 number, since 2×64765031² = 8389018480861922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64765037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32382515 + 32382516.

It is an arithmetic number, because the mean of its divisors is an integer number (32382516).

Almost surely, 2^64765031 is an apocalyptic number.

64765031 is a deficient number, since it is larger than the sum of its proper divisors (1).

64765031 is an equidigital number, since it uses as much as digits as its factorization.

64765031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 64765031 is about 8047.6723964138. The cubic root of 64765031 is about 401.5875058116.

The spelling of 64765031 in words is "sixty-four million, seven hundred sixty-five thousand, thirty-one".