6464424660 has 48 divisors (see below), whose sum is σ = 18589595136. Its totient is φ = 1677255552.

The previous prime is 6464424649. The next prime is 6464424671. The reversal of 6464424660 is 664244646.

It is an interprime number because it is at equal distance from previous prime (6464424649) and next prime (6464424671).

It is a super-2 number, since 2×6464424660² = 83577572369632231200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1453732 + ... + 1458171.

It is an arithmetic number, because the mean of its divisors is an integer number (387283232).

Almost surely, 2^6464424660 is an apocalyptic number.

6464424660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6464424660 is an abundant number, since it is smaller than the sum of its proper divisors (12125170476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6464424660 is a wasteful number, since it uses less digits than its factorization.

6464424660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911952 (or 2911950 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The square root of 6464424660 is about 80401.6458786759. The cubic root of 6464424660 is about 1862.8445952492.

The spelling of 6464424660 in words is "six billion, four hundred sixty-four million, four hundred twenty-four thousand, six hundred sixty".