616939900 has 18 divisors (see below), whose sum is σ = 1338759800. Its totient is φ = 246775920.

The previous prime is 616939889. The next prime is 616939903. The reversal of 616939900 is 9939616.

It is a super-2 number, since 2×616939900² = 761229680424020000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616939903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3084600 + ... + 3084799.

Almost surely, 2^616939900 is an apocalyptic number.

It is an amenable number.

616939900 is an abundant number, since it is smaller than the sum of its proper divisors (721819900).

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

616939900 is a wasteful number, since it uses less digits than its factorization.

616939900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6169413 (or 6169406 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 616939900 is about 24838.2748998396. The cubic root of 616939900 is about 851.2967059431.

The spelling of 616939900 in words is "six hundred sixteen million, nine hundred thirty-nine thousand, nine hundred".