646460032 has 32 divisors (see below), whose sum is σ = 1289826720. Its totient is φ = 322738944.

The previous prime is 646459973. The next prime is 646460051. The reversal of 646460032 is 230064646.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 646459976 and 646460003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89583 + ... + 96529.

It is an arithmetic number, because the mean of its divisors is an integer number (40307085).

Almost surely, 2^646460032 is an apocalyptic number.

It is an amenable number.

646460032 is a deficient number, since it is larger than the sum of its proper divisors (643366688).

646460032 is an equidigital number, since it uses as much as digits as its factorization.

646460032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7688 (or 7676 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 646460032 is about 25425.5783021744. The cubic root of 646460032 is about 864.6636989978.

The spelling of 646460032 in words is "six hundred forty-six million, four hundred sixty thousand, thirty-two".