616553660 has 24 divisors (see below), whose sum is σ = 1298912496. Its totient is φ = 245831040.

The previous prime is 616553653. The next prime is 616553669. The reversal of 616553660 is 66355616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616553669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42986 + ... + 55505.

It is an arithmetic number, because the mean of its divisors is an integer number (54121354).

Almost surely, 2^616553660 is an apocalyptic number.

It is an amenable number.

616553660 is an abundant number, since it is smaller than the sum of its proper divisors (682358836).

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

616553660 is a wasteful number, since it uses less digits than its factorization.

616553660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98813 (or 98811 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 616553660 is about 24830.4985854090. The cubic root of 616553660 is about 851.1190152255.

The spelling of 616553660 in words is "six hundred sixteen million, five hundred fifty-three thousand, six hundred sixty".