816690536 has 32 divisors (see below), whose sum is σ = 1585267200. Its totient is φ = 394029120.

The previous prime is 816690527. The next prime is 816690541. The reversal of 816690536 is 635096618.

816690536 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, 84446 + ... + 93618.

It is an arithmetic number, because the mean of its divisors is an integer number (49539600).

Almost surely, 2^816690536 is an apocalyptic number.

It is an amenable number.

816690536 is a deficient number, since it is larger than the sum of its proper divisors (768576664).

816690536 is a wasteful number, since it uses less digits than its factorization.

816690536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9569 (or 9565 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 816690536 is about 28577.7979557558. The cubic root of 816690536 is about 934.7292670360.

The spelling of 816690536 in words is "eight hundred sixteen million, six hundred ninety thousand, five hundred thirty-six".