64464031 has 4 divisors (see below), whose sum is σ = 64609992. Its totient is φ = 64318072.

The previous prime is 64464019. The next prime is 64464041. The reversal of 64464031 is 13046446.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64464031 - 2⁵ = 64463999 is a prime.

It is a super-2 number, since 2×64464031² = 8311222585537922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64464041) 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 in 3 ways as a sum of consecutive naturals, for example, 72316 + ... + 73201.

It is an arithmetic number, because the mean of its divisors is an integer number (16152498).

Almost surely, 2^64464031 is an apocalyptic number.

64464031 is a deficient number, since it is larger than the sum of its proper divisors (145961).

64464031 is a wasteful number, since it uses less digits than its factorization.

64464031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145960.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 64464031 is about 8028.9495576943. The cubic root of 64464031 is about 400.9644041927.

The spelling of 64464031 in words is "sixty-four million, four hundred sixty-four thousand, thirty-one".