523304666404 has 27 divisors (see below), whose sum is σ = 991682502993. Its totient is φ = 241516549872.

The previous prime is 523304666351. The next prime is 523304666407. The reversal of 523304666404 is 404666403325.

It is a happy number.

The square root of 523304666404 is 723398.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 77411932900 + 445892733504 = 278230^2 + 667752^2 .

It is not an unprimeable number, because it can be changed into a prime (523304666407) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18794437 + ... + 18822259.

Almost surely, 2^523304666404 is an apocalyptic number.

523304666404 is the 723398-th square number.

It is an amenable number.

523304666404 is a deficient number, since it is larger than the sum of its proper divisors (468377836589).

523304666404 is an frugal number, since it uses more digits than its factorization.

523304666404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55676 (or 27838 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 523304666404 in words is "five hundred twenty-three billion, three hundred four million, six hundred sixty-six thousand, four hundred four".