655888899 has 16 divisors (see below), whose sum is σ = 913386240. Its totient is φ = 418226400.

The previous prime is 655888879. The next prime is 655888903. The reversal of 655888899 is 998888556.

It is not a de Polignac number, because 655888899 - 2⁷ = 655888771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655888819) 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, 43527 + ... + 56624.

It is an arithmetic number, because the mean of its divisors is an integer number (57086640).

Almost surely, 2^655888899 is an apocalyptic number.

655888899 is a deficient number, since it is larger than the sum of its proper divisors (257497341).

655888899 is a wasteful number, since it uses less digits than its factorization.

655888899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100250.

The product of its digits is 49766400, while the sum is 66.

The square root of 655888899 is about 25610.3279752525. The cubic root of 655888899 is about 868.8472419211.

The spelling of 655888899 in words is "six hundred fifty-five million, eight hundred eighty-eight thousand, eight hundred ninety-nine".