616920650 has 24 divisors (see below), whose sum is σ = 1214972460. Its totient is φ = 232252160.

The previous prime is 616920593. The next prime is 616920653. The reversal of 616920650 is 56029616.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 148328041 + 468592609 = 12179^2 + 21647^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 616920650.

It is not an unprimeable number, because it can be changed into a prime (616920653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 362045 + ... + 363744.

Almost surely, 2^616920650 is an apocalyptic number.

616920650 is a deficient number, since it is larger than the sum of its proper divisors (598051810).

616920650 is a wasteful number, since it uses less digits than its factorization.

616920650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725818 (or 725813 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 616920650 is about 24837.8873900338. The cubic root of 616920650 is about 851.2878516867.

The spelling of 616920650 in words is "six hundred sixteen million, nine hundred twenty thousand, six hundred fifty".