807664642 has 16 divisors (see below), whose sum is σ = 1265326272. Its totient is φ = 385921360.

The previous prime is 807664633. The next prime is 807664661. The reversal of 807664642 is 246466708.

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, 46893 + ... + 61759.

It is an arithmetic number, because the mean of its divisors is an integer number (79082892).

Almost surely, 2^807664642 is an apocalyptic number.

807664642 is a deficient number, since it is larger than the sum of its proper divisors (457661630).

807664642 is a wasteful number, since it uses less digits than its factorization.

807664642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16073.

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 807664642 is about 28419.4412682586. The cubic root of 807664642 is about 931.2730251983.

The spelling of 807664642 in words is "eight hundred seven million, six hundred sixty-four thousand, six hundred forty-two".