616561104 has 40 divisors (see below), whose sum is σ = 1599953152. Its totient is φ = 204595200.

The previous prime is 616561091. The next prime is 616561111. The reversal of 616561104 is 401165616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18097 + ... + 39504.

Almost surely, 2^616561104 is an apocalyptic number.

It is an amenable number.

616561104 is an abundant number, since it is smaller than the sum of its proper divisors (983392048).

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

616561104 is a wasteful number, since it uses less digits than its factorization.

616561104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57835 (or 57829 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 616561104 is about 24830.6484812620. The cubic root of 616561104 is about 851.1224405583.

The spelling of 616561104 in words is "six hundred sixteen million, five hundred sixty-one thousand, one hundred four".