655655903 has 16 divisors (see below), whose sum is σ = 764037120. Its totient is φ = 551032416.

The previous prime is 655655879. The next prime is 655655939. The reversal of 655655903 is 309556556.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 655655903 - 2⁸ = 655655647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655652903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101453 + ... + 107721.

It is an arithmetic number, because the mean of its divisors is an integer number (47752320).

Almost surely, 2^655655903 is an apocalyptic number.

655655903 is a deficient number, since it is larger than the sum of its proper divisors (108381217).

655655903 is a wasteful number, since it uses less digits than its factorization.

655655903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6566.

The product of its (nonzero) digits is 607500, while the sum is 44.

The square root of 655655903 is about 25605.7787032537. The cubic root of 655655903 is about 868.7443475091.

The spelling of 655655903 in words is "six hundred fifty-five million, six hundred fifty-five thousand, nine hundred three".