307643964 has 12 divisors (see below), whose sum is σ = 717835944. Its totient is φ = 102547984.

The previous prime is 307643957. The next prime is 307643981. The reversal of 307643964 is 469346703.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12818487 + ... + 12818510.

It is an arithmetic number, because the mean of its divisors is an integer number (59819662).

Almost surely, 2^307643964 is an apocalyptic number.

It is an amenable number.

307643964 is an abundant number, since it is smaller than the sum of its proper divisors (410191980).

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

307643964 is a wasteful number, since it uses less digits than its factorization.

307643964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25637004 (or 25637002 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 42.

The square root of 307643964 is about 17539.7823247610. The cubic root of 307643964 is about 675.0710224308.

The spelling of 307643964 in words is "three hundred seven million, six hundred forty-three thousand, nine hundred sixty-four".