616881055 has 24 divisors (see below), whose sum is σ = 852749856. Its totient is φ = 419659200.

The previous prime is 616881029. The next prime is 616881061. The reversal of 616881055 is 550188616.

It is not a de Polignac number, because 616881055 - 2¹¹ = 616879007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 616880999 and 616881017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 797649 + ... + 798421.

It is an arithmetic number, because the mean of its divisors is an integer number (35531244).

Almost surely, 2^616881055 is an apocalyptic number.

616881055 is a deficient number, since it is larger than the sum of its proper divisors (235868801).

616881055 is an equidigital number, since it uses as much as digits as its factorization.

616881055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 616881055 is about 24837.0903086493. The cubic root of 616881055 is about 851.2696389373.

The spelling of 616881055 in words is "six hundred sixteen million, eight hundred eighty-one thousand, fifty-five".