523664366 has 4 divisors (see below), whose sum is σ = 785496552. Its totient is φ = 261832182.

The previous prime is 523664359. The next prime is 523664371. The reversal of 523664366 is 663466325.

It is a semiprime because it is the product of two primes.

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, 130916090 + ... + 130916093.

It is an arithmetic number, because the mean of its divisors is an integer number (196374138).

Almost surely, 2^523664366 is an apocalyptic number.

523664366 is a deficient number, since it is larger than the sum of its proper divisors (261832186).

523664366 is a wasteful number, since it uses less digits than its factorization.

523664366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261832185.

The product of its digits is 466560, while the sum is 41.

The square root of 523664366 is about 22883.7139905217. The cubic root of 523664366 is about 806.0296308892.

The spelling of 523664366 in words is "five hundred twenty-three million, six hundred sixty-four thousand, three hundred sixty-six".