616943980 has 48 divisors (see below), whose sum is σ = 1315802880. Its totient is φ = 242948288.

The previous prime is 616943891. The next prime is 616943981. The reversal of 616943980 is 89349616.

It is a self number, because there is not a number n which added to its sum of digits gives 616943980.

It is not an unprimeable number, because it can be changed into a prime (616943981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695097 + ... + 695983.

It is an arithmetic number, because the mean of its divisors is an integer number (27412560).

Almost surely, 2^616943980 is an apocalyptic number.

It is an amenable number.

616943980 is an abundant number, since it is smaller than the sum of its proper divisors (698858900).

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

616943980 is a wasteful number, since it uses less digits than its factorization.

616943980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398 (or 1396 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 616943980 is about 24838.3570310115. The cubic root of 616943980 is about 851.2985825618.

The spelling of 616943980 in words is "six hundred sixteen million, nine hundred forty-three thousand, nine hundred eighty".