617492868 has 24 divisors (see below), whose sum is σ = 1503461568. Its totient is φ = 196881696.

The previous prime is 617492849. The next prime is 617492929. The reversal of 617492868 is 868294716.

It is a self number, because there is not a number n which added to its sum of digits gives 617492868.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118371 + ... + 1118922.

It is an arithmetic number, because the mean of its divisors is an integer number (62644232).

Almost surely, 2^617492868 is an apocalyptic number.

It is an amenable number.

617492868 is an abundant number, since it is smaller than the sum of its proper divisors (885968700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

617492868 is a wasteful number, since it uses less digits than its factorization.

617492868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237323 (or 2237321 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 617492868 is about 24849.4037755436. The cubic root of 617492868 is about 851.5509712636.

The spelling of 617492868 in words is "six hundred seventeen million, four hundred ninety-two thousand, eight hundred sixty-eight".