523690816 has 112 divisors (see below), whose sum is σ = 1188354240. Its totient is φ = 226795520.

The previous prime is 523690807. The next prime is 523690819. The reversal of 523690816 is 618096325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523690819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2306895 + ... + 2307121.

Almost surely, 2^523690816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523690816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594177120).

523690816 is an abundant number, since it is smaller than the sum of its proper divisors (664663424).

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

523690816 is a wasteful number, since it uses less digits than its factorization.

523690816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 523690816 is about 22884.2919051475. The cubic root of 523690816 is about 806.0432013656.

The spelling of 523690816 in words is "five hundred twenty-three million, six hundred ninety thousand, eight hundred sixteen".