523686396 has 12 divisors (see below), whose sum is σ = 1221934952. Its totient is φ = 174562128.

The previous prime is 523686349. The next prime is 523686407. The reversal of 523686396 is 693686325.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21820255 + ... + 21820278.

Almost surely, 2^523686396 is an apocalyptic number.

It is an amenable number.

523686396 is an abundant number, since it is smaller than the sum of its proper divisors (698248556).

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

523686396 is a wasteful number, since it uses less digits than its factorization.

523686396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43640540 (or 43640538 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 48.

The square root of 523686396 is about 22884.1953321501. The cubic root of 523686396 is about 806.0409336656.

The spelling of 523686396 in words is "five hundred twenty-three million, six hundred eighty-six thousand, three hundred ninety-six".