616220900 has 18 divisors (see below), whose sum is σ = 1337199570. Its totient is φ = 246488320.

The previous prime is 616220893. The next prime is 616220911. The reversal of 616220900 is 9022616.

It can be written as a sum of positive squares in 3 ways, for example, as 101929216 + 514291684 = 10096^2 + 22678^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 616220900.

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, 3081005 + ... + 3081204.

It is an arithmetic number, because the mean of its divisors is an integer number (74288865).

Almost surely, 2^616220900 is an apocalyptic number.

It is an amenable number.

616220900 is an abundant number, since it is smaller than the sum of its proper divisors (720978670).

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

616220900 is a wasteful number, since it uses less digits than its factorization.

616220900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6162223 (or 6162216 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 616220900 is about 24823.7970504111. The cubic root of 616220900 is about 850.9658686037.

The spelling of 616220900 in words is "six hundred sixteen million, two hundred twenty thousand, nine hundred".