655257604 has 9 divisors (see below), whose sum is σ = 1146790407. Its totient is φ = 327603204.

The previous prime is 655257593. The next prime is 655257619. The reversal of 655257604 is 406752556.

The square root of 655257604 is 25598.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 44797 + ... + 57595.

Almost surely, 2^655257604 is an apocalyptic number.

655257604 is the 25598-th square number.

It is an amenable number.

655257604 is a deficient number, since it is larger than the sum of its proper divisors (491532803).

655257604 is an frugal number, since it uses more digits than its factorization.

655257604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25602 (or 12801 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 40.

The cubic root of 655257604 is about 868.5683964277.

The spelling of 655257604 in words is "six hundred fifty-five million, two hundred fifty-seven thousand, six hundred four".