616431155 has 16 divisors (see below), whose sum is σ = 790279680. Its totient is φ = 460212192.

The previous prime is 616431149. The next prime is 616431227. The reversal of 616431155 is 551134616.

It is a cyclic number.

It is not a de Polignac number, because 616431155 - 2⁴ = 616431139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42059 + ... + 54788.

It is an arithmetic number, because the mean of its divisors is an integer number (49392480).

Almost surely, 2^616431155 is an apocalyptic number.

616431155 is a deficient number, since it is larger than the sum of its proper divisors (173848525).

616431155 is a wasteful number, since it uses less digits than its factorization.

616431155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96938.

The product of its digits is 10800, while the sum is 32.

The square root of 616431155 is about 24828.0316376470. The cubic root of 616431155 is about 851.0626409805.

The spelling of 616431155 in words is "six hundred sixteen million, four hundred thirty-one thousand, one hundred fifty-five".