616131396 has 36 divisors (see below), whose sum is σ = 1559376000. Its totient is φ = 205122288.

The previous prime is 616131389. The next prime is 616131401. The reversal of 616131396 is 693131616.

616131396 is a `hidden beast` number, since 6 + 1 + 613 + 1 + 39 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 616131396.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20005 + ... + 40403.

It is an arithmetic number, because the mean of its divisors is an integer number (43316000).

Almost surely, 2^616131396 is an apocalyptic number.

It is an amenable number.

616131396 is an abundant number, since it is smaller than the sum of its proper divisors (943244604).

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

616131396 is a wasteful number, since it uses less digits than its factorization.

616131396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21248 (or 21243 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 616131396 is about 24821.9941986940. The cubic root of 616131396 is about 850.9246666381.

The spelling of 616131396 in words is "six hundred sixteen million, one hundred thirty-one thousand, three hundred ninety-six".