616969616 has 20 divisors (see below), whose sum is σ = 1214976924. Its totient is φ = 303427200.

The previous prime is 616969607. The next prime is 616969621.

616969616 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 153859216 + 463110400 = 12404^2 + 21520^2 .

It is an alternating number because its digits alternate between even and odd.

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, 315095 + ... + 317046.

Almost surely, 2^616969616 is an apocalyptic number.

It is an amenable number.

616969616 is a deficient number, since it is larger than the sum of its proper divisors (598007308).

616969616 is a wasteful number, since it uses less digits than its factorization.

616969616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632210 (or 632204 counting only the distinct ones).

The product of its digits is 629856, while the sum is 50.

The square root of 616969616 is about 24838.8730823280. The cubic root of 616969616 is about 851.3103737935.

The spelling of 616969616 in words is "six hundred sixteen million, nine hundred sixty-nine thousand, six hundred sixteen".