616720711 has 2 divisors, whose sum is σ = 616720712. Its totient is φ = 616720710.

The previous prime is 616720703. The next prime is 616720721. The reversal of 616720711 is 117027616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 616720711 - 2³ = 616720703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616720721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308360355 + 308360356.

It is an arithmetic number, because the mean of its divisors is an integer number (308360356).

Almost surely, 2^616720711 is an apocalyptic number.

616720711 is a deficient number, since it is larger than the sum of its proper divisors (1).

616720711 is an equidigital number, since it uses as much as digits as its factorization.

616720711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 616720711 is about 24833.8621845254. The cubic root of 616720711 is about 851.1958765775.

The spelling of 616720711 in words is "six hundred sixteen million, seven hundred twenty thousand, seven hundred eleven".