616980815 has 24 divisors (see below), whose sum is σ = 821786784. Its totient is φ = 444312000.

The previous prime is 616980811. The next prime is 616980851. The reversal of 616980815 is 518089616.

It is not a de Polignac number, because 616980815 - 2² = 616980811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616980811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57365 + ... + 67265.

It is an arithmetic number, because the mean of its divisors is an integer number (34241116).

Almost surely, 2^616980815 is an apocalyptic number.

616980815 is a deficient number, since it is larger than the sum of its proper divisors (204805969).

616980815 is a wasteful number, since it uses less digits than its factorization.

616980815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10031 (or 10020 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 616980815 is about 24839.0985142376. The cubic root of 616980815 is about 851.3155246507.

The spelling of 616980815 in words is "six hundred sixteen million, nine hundred eighty thousand, eight hundred fifteen".