616666480 has 20 divisors (see below), whose sum is σ = 1433749752. Its totient is φ = 246666560.

The previous prime is 616666447. The next prime is 616666549. The reversal of 616666480 is 84666616.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 3854086 + ... + 3854245.

Almost surely, 2^616666480 is an apocalyptic number.

It is an amenable number.

616666480 is an abundant number, since it is smaller than the sum of its proper divisors (817083272).

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

616666480 is a wasteful number, since it uses less digits than its factorization.

616666480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7708344 (or 7708338 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 616666480 is about 24832.7702844447. The cubic root of 616666480 is about 851.1709260308.

The spelling of 616666480 in words is "six hundred sixteen million, six hundred sixty-six thousand, four hundred eighty".