816954650 has 24 divisors (see below), whose sum is σ = 1571936220. Its totient is φ = 315512960.

The previous prime is 816954629. The next prime is 816954659. The reversal of 816954650 is 56459618.

816954650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 141110641 + 675844009 = 11879^2 + 25997^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (816954659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280259 + ... + 283158.

Almost surely, 2^816954650 is an apocalyptic number.

816954650 is a deficient number, since it is larger than the sum of its proper divisors (754981570).

816954650 is a wasteful number, since it uses less digits than its factorization.

816954650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563458 (or 563453 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 816954650 is about 28582.4185470719. The cubic root of 816954650 is about 934.8300185719.

The spelling of 816954650 in words is "eight hundred sixteen million, nine hundred fifty-four thousand, six hundred fifty".