6464634631 has 48 divisors (see below), whose sum is σ = 8397768960. Its totient is φ = 4927426560.

The previous prime is 6464634623. The next prime is 6464634641. The reversal of 6464634631 is 1364364646.

It is not a de Polignac number, because 6464634631 - 2³ = 6464634623 is a prime.

It is a super-2 number, since 2×6464634631² = 83583001824649012322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6464634641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5311335 + ... + 5312551.

It is an arithmetic number, because the mean of its divisors is an integer number (174953520).

Almost surely, 2^6464634631 is an apocalyptic number.

6464634631 is a deficient number, since it is larger than the sum of its proper divisors (1933134329).

6464634631 is a wasteful number, since it uses less digits than its factorization.

6464634631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544 (or 1537 counting only the distinct ones).

The product of its digits is 746496, while the sum is 43.

The square root of 6464634631 is about 80402.9516311435. The cubic root of 6464634631 is about 1862.8647640515.

The spelling of 6464634631 in words is "six billion, four hundred sixty-four million, six hundred thirty-four thousand, six hundred thirty-one".