646432360 has 64 divisors (see below), whose sum is σ = 1697656320. Its totient is φ = 216913920.

The previous prime is 646432349. The next prime is 646432399. The reversal of 646432360 is 63234646.

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, 11401 + ... + 37720.

It is an arithmetic number, because the mean of its divisors is an integer number (26525880).

Almost surely, 2^646432360 is an apocalyptic number.

It is an amenable number.

646432360 is an abundant number, since it is smaller than the sum of its proper divisors (1051223960).

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

646432360 is a wasteful number, since it uses less digits than its factorization.

646432360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49186 (or 49182 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 646432360 is about 25425.0341199378. The cubic root of 646432360 is about 864.6513613877.

The spelling of 646432360 in words is "six hundred forty-six million, four hundred thirty-two thousand, three hundred sixty".