816290612 has 12 divisors (see below), whose sum is σ = 1429028580. Its totient is φ = 407996736.

The previous prime is 816290609. The next prime is 816290659. The reversal of 816290612 is 216092618.

816290612 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 2 ways, for example, as 225120016 + 591170596 = 15004^2 + 24314^2 .

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, 24287 + ... + 47142.

It is an arithmetic number, because the mean of its divisors is an integer number (119085715).

Almost surely, 2^816290612 is an apocalyptic number.

It is an amenable number.

816290612 is a deficient number, since it is larger than the sum of its proper divisors (612737968).

816290612 is a wasteful number, since it uses less digits than its factorization.

816290612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74290 (or 74288 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 816290612 is about 28570.7999887998. The cubic root of 816290612 is about 934.5766667196.

The spelling of 816290612 in words is "eight hundred sixteen million, two hundred ninety thousand, six hundred twelve".