616438086 has 16 divisors (see below), whose sum is σ = 1344955968. Its totient is φ = 186799400.

The previous prime is 616438063. The next prime is 616438091. The reversal of 616438086 is 680834616.

It is a happy number.

It is a Curzon number.

It is a congruent number.

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, 4669920 + ... + 4670051.

It is an arithmetic number, because the mean of its divisors is an integer number (84059748).

Almost surely, 2^616438086 is an apocalyptic number.

616438086 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

616438086 is an abundant number, since it is smaller than the sum of its proper divisors (728517882).

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

616438086 is a wasteful number, since it uses less digits than its factorization.

616438086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9339987.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 616438086 is about 24828.1712173893. The cubic root of 616438086 is about 851.0658306814.

The spelling of 616438086 in words is "six hundred sixteen million, four hundred thirty-eight thousand, eighty-six".