617144856 has 16 divisors (see below), whose sum is σ = 1542862200. Its totient is φ = 205714944.

The previous prime is 617144821. The next prime is 617144861. The reversal of 617144856 is 658441716.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12857161 + ... + 12857208.

Almost surely, 2^617144856 is an apocalyptic number.

It is an amenable number.

617144856 is an abundant number, since it is smaller than the sum of its proper divisors (925717344).

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

617144856 is a wasteful number, since it uses less digits than its factorization.

617144856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25714378 (or 25714374 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 617144856 is about 24842.4003671143. The cubic root of 617144856 is about 851.3909663672.

The spelling of 617144856 in words is "six hundred seventeen million, one hundred forty-four thousand, eight hundred fifty-six".