523699772 has 6 divisors (see below), whose sum is σ = 916474608. Its totient is φ = 261849884.

The previous prime is 523699747. The next prime is 523699783. The reversal of 523699772 is 277996325.

It is a happy number.

It is a super-2 number, since 2×523699772² = 548522902385703968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 523699772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65462468 + ... + 65462475.

It is an arithmetic number, because the mean of its divisors is an integer number (152745768).

Almost surely, 2^523699772 is an apocalyptic number.

It is an amenable number.

523699772 is a deficient number, since it is larger than the sum of its proper divisors (392774836).

523699772 is a wasteful number, since it uses less digits than its factorization.

523699772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130924947 (or 130924945 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 50.

The square root of 523699772 is about 22884.4875843878. The cubic root of 523699772 is about 806.0477962408.

The spelling of 523699772 in words is "five hundred twenty-three million, six hundred ninety-nine thousand, seven hundred seventy-two".