616408992 has 36 divisors (see below), whose sum is σ = 1752913890. Its totient is φ = 205469568.

The previous prime is 616408987. The next prime is 616409033. The reversal of 616408992 is 299804616.

It is a happy number.

616408992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 612859536 + 3549456 = 24756^2 + 1884^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1069867 + ... + 1070442.

Almost surely, 2^616408992 is an apocalyptic number.

It is an amenable number.

616408992 is an abundant number, since it is smaller than the sum of its proper divisors (1136504898).

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

616408992 is a wasteful number, since it uses less digits than its factorization.

616408992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140325 (or 2140314 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 616408992 is about 24827.5853034483. The cubic root of 616408992 is about 851.0524412324.

Adding to 616408992 its product of nonzero digits (186624), we get a palindrome (616595616).

The spelling of 616408992 in words is "six hundred sixteen million, four hundred eight thousand, nine hundred ninety-two".