523680657 has 8 divisors (see below), whose sum is σ = 705154560. Its totient is φ = 345663600.

The previous prime is 523680623. The next prime is 523680667. The reversal of 523680657 is 756086325.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 523680657 - 2¹⁰ = 523679633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (523680607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863857 + ... + 864462.

It is an arithmetic number, because the mean of its divisors is an integer number (88144320).

Almost surely, 2^523680657 is an apocalyptic number.

It is an amenable number.

523680657 is a deficient number, since it is larger than the sum of its proper divisors (181473903).

523680657 is a wasteful number, since it uses less digits than its factorization.

523680657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728423.

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 523680657 is about 22884.0699395890. The cubic root of 523680657 is about 806.0379892280.

The spelling of 523680657 in words is "five hundred twenty-three million, six hundred eighty thousand, six hundred fifty-seven".