617388842 has 16 divisors (see below), whose sum is σ = 1058711040. Its totient is φ = 264512688.

The previous prime is 617388833. The next prime is 617388857. The reversal of 617388842 is 248883716.

It is a super-2 number, since 2×617388842² = 762337964452201928, which contains 22 as substring.

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, 66884 + ... + 75552.

It is an arithmetic number, because the mean of its divisors is an integer number (66169440).

Almost surely, 2^617388842 is an apocalyptic number.

617388842 is a deficient number, since it is larger than the sum of its proper divisors (441322198).

617388842 is a wasteful number, since it uses less digits than its factorization.

617388842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13765.

The product of its digits is 516096, while the sum is 47.

The square root of 617388842 is about 24847.3105586903. The cubic root of 617388842 is about 851.5031497039.

The spelling of 617388842 in words is "six hundred seventeen million, three hundred eighty-eight thousand, eight hundred forty-two".