655880831 has 8 divisors (see below), whose sum is σ = 667867200. Its totient is φ = 643986720.

The previous prime is 655880767. The next prime is 655880839. The reversal of 655880831 is 138088556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 655880831 - 2⁶ = 655880767 is a prime.

It is a super-2 number, since 2×655880831² = 860359328946501122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655880839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8636 + ... + 37233.

It is an arithmetic number, because the mean of its divisors is an integer number (83483400).

Almost surely, 2^655880831 is an apocalyptic number.

655880831 is a deficient number, since it is larger than the sum of its proper divisors (11986369).

655880831 is a wasteful number, since it uses less digits than its factorization.

655880831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46129.

The product of its (nonzero) digits is 230400, while the sum is 44.

The square root of 655880831 is about 25610.1704601902. The cubic root of 655880831 is about 868.8436793826.

The spelling of 655880831 in words is "six hundred fifty-five million, eight hundred eighty thousand, eight hundred thirty-one".