616486979 has 2 divisors, whose sum is σ = 616486980. Its totient is φ = 616486978.

The previous prime is 616486961. The next prime is 616486999. The reversal of 616486979 is 979684616.

616486979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616486979 is a prime.

It is not a weakly prime, because it can be changed into another prime (616486909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308243489 + 308243490.

It is an arithmetic number, because the mean of its divisors is an integer number (308243490).

Almost surely, 2^616486979 is an apocalyptic number.

616486979 is a deficient number, since it is larger than the sum of its proper divisors (1).

616486979 is an equidigital number, since it uses as much as digits as its factorization.

616486979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 56.

The square root of 616486979 is about 24829.1558253598. The cubic root of 616486979 is about 851.0883309467.

The spelling of 616486979 in words is "six hundred sixteen million, four hundred eighty-six thousand, nine hundred seventy-nine".