816995604 has 24 divisors (see below), whose sum is σ = 1989207360. Its totient is φ = 260491264.

The previous prime is 816995593. The next prime is 816995623. The reversal of 816995604 is 406599618.

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 7 ways as a sum of consecutive naturals, for example, 1479789 + ... + 1480340.

It is an arithmetic number, because the mean of its divisors is an integer number (82883640).

Almost surely, 2^816995604 is an apocalyptic number.

It is an amenable number.

816995604 is an abundant number, since it is smaller than the sum of its proper divisors (1172211756).

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

816995604 is a wasteful number, since it uses less digits than its factorization.

816995604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960159 (or 2960157 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 816995604 is about 28583.1349575235. The cubic root of 816995604 is about 934.8456393447.

The spelling of 816995604 in words is "eight hundred sixteen million, nine hundred ninety-five thousand, six hundred four".