616031620 has 12 divisors (see below), whose sum is σ = 1293666444. Its totient is φ = 246412640.

The previous prime is 616031593. The next prime is 616031639. The reversal of 616031620 is 26130616.

616031620 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 2 ways, for example, as 160123716 + 455907904 = 12654^2 + 21352^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15400771 + ... + 15400810.

It is an arithmetic number, because the mean of its divisors is an integer number (107805537).

Almost surely, 2^616031620 is an apocalyptic number.

It is an amenable number.

616031620 is an abundant number, since it is smaller than the sum of its proper divisors (677634824).

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

616031620 is a wasteful number, since it uses less digits than its factorization.

616031620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30801590 (or 30801588 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 616031620 is about 24819.9842868605. The cubic root of 616031620 is about 850.8787313914.

The spelling of 616031620 in words is "six hundred sixteen million, thirty-one thousand, six hundred twenty".