646082412 has 24 divisors (see below), whose sum is σ = 1528178736. Its totient is φ = 212410368.

The previous prime is 646082389. The next prime is 646082413. The reversal of 646082412 is 214280646.

646082412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (646082413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367893 + ... + 369644.

It is an arithmetic number, because the mean of its divisors is an integer number (63674114).

Almost surely, 2^646082412 is an apocalyptic number.

It is an amenable number.

646082412 is an abundant number, since it is smaller than the sum of its proper divisors (882096324).

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

646082412 is a wasteful number, since it uses less digits than its factorization.

646082412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737617 (or 737615 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 646082412 is about 25418.1512309609. The cubic root of 646082412 is about 864.4953060646.

The spelling of 646082412 in words is "six hundred forty-six million, eighty-two thousand, four hundred twelve".