461640264 has 32 divisors (see below), whose sum is σ = 1214844000. Its totient is φ = 145780992.

The previous prime is 461640259. The next prime is 461640281. The reversal of 461640264 is 462046164.

It is a super-2 number, since 2×461640264² = 426223466691979392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505729 + ... + 506640.

It is an arithmetic number, because the mean of its divisors is an integer number (37963875).

Almost surely, 2^461640264 is an apocalyptic number.

It is an amenable number.

461640264 is an abundant number, since it is smaller than the sum of its proper divisors (753203736).

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

461640264 is a wasteful number, since it uses less digits than its factorization.

461640264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012397 (or 1012393 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 461640264 is about 21485.8154138957. The cubic root of 461640264 is about 772.8607052305.

The spelling of 461640264 in words is "four hundred sixty-one million, six hundred forty thousand, two hundred sixty-four".