616909616 has 40 divisors (see below), whose sum is σ = 1236670848. Its totient is φ = 297920000.

The previous prime is 616909607. The next prime is 616909627.

616909616 is nontrivially palindromic in base 10.

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 7 ways as a sum of consecutive naturals, for example, 61601 + ... + 70911.

Almost surely, 2^616909616 is an apocalyptic number.

It is an amenable number.

616909616 is an abundant number, since it is smaller than the sum of its proper divisors (619761232).

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

616909616 is a wasteful number, since it uses less digits than its factorization.

616909616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9461 (or 9455 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 616909616 is about 24837.6652687003. The cubic root of 616909616 is about 851.2827763900.

The spelling of 616909616 in words is "six hundred sixteen million, nine hundred nine thousand, six hundred sixteen".