64964331 has 6 divisors (see below), whose sum is σ = 93837380. Its totient is φ = 43309548.

The previous prime is 64964309. The next prime is 64964353. The reversal of 64964331 is 13346946.

64964331 is a `hidden beast` number, since 6 + 4 + 9 + 643 + 3 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (64964309) and next prime (64964353).

It is not a de Polignac number, because 64964331 - 2⁹ = 64963819 is a prime.

It is a super-2 number, since 2×64964331² = 8440728604555122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64964371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3609121 + ... + 3609138.

Almost surely, 2^64964331 is an apocalyptic number.

64964331 is a deficient number, since it is larger than the sum of its proper divisors (28873049).

64964331 is a wasteful number, since it uses less digits than its factorization.

64964331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7218265 (or 7218262 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 64964331 is about 8060.0453472670. The cubic root of 64964331 is about 401.9990161111. Note that the first 3 decimals are identical.

It can be divided in two parts, 649 and 64331, that added together give a triangular number (64980 = T₃₆₀).

The spelling of 64964331 in words is "sixty-four million, nine hundred sixty-four thousand, three hundred thirty-one".