816887612 has 12 divisors (see below), whose sum is σ = 1432170600. Its totient is φ = 407696016.

The previous prime is 816887597. The next prime is 816887623. The reversal of 816887612 is 216788618.

It is a happy number.

816887612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184487 + ... + 188862.

It is an arithmetic number, because the mean of its divisors is an integer number (119347550).

Almost surely, 2^816887612 is an apocalyptic number.

It is an amenable number.

816887612 is a deficient number, since it is larger than the sum of its proper divisors (615282988).

816887612 is a wasteful number, since it uses less digits than its factorization.

816887612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373900 (or 373898 counting only the distinct ones).

The product of its digits is 258048, while the sum is 47.

The square root of 816887612 is about 28581.2458090966. The cubic root of 816887612 is about 934.8044476507.

The spelling of 816887612 in words is "eight hundred sixteen million, eight hundred eighty-seven thousand, six hundred twelve".