646435752 has 32 divisors (see below), whose sum is σ = 1671818400. Its totient is φ = 208048064.

The previous prime is 646435739. The next prime is 646435787. The reversal of 646435752 is 257534646.

646435752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 463698 + ... + 465089.

It is an arithmetic number, because the mean of its divisors is an integer number (52244325).

Almost surely, 2^646435752 is an apocalyptic number.

It is an amenable number.

646435752 is an abundant number, since it is smaller than the sum of its proper divisors (1025382648).

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

646435752 is a wasteful number, since it uses less digits than its factorization.

646435752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928825 (or 928821 counting only the distinct ones).

The product of its digits is 604800, while the sum is 42.

The square root of 646435752 is about 25425.1008257588. The cubic root of 646435752 is about 864.6528737359.

The spelling of 646435752 in words is "six hundred forty-six million, four hundred thirty-five thousand, seven hundred fifty-two".