616178879 has 2 divisors, whose sum is σ = 616178880. Its totient is φ = 616178878.

The previous prime is 616178837. The next prime is 616178887. The reversal of 616178879 is 978871616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616178879 - 2¹⁶ = 616113343 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616178879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616178819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308089439 + 308089440.

It is an arithmetic number, because the mean of its divisors is an integer number (308089440).

Almost surely, 2^616178879 is an apocalyptic number.

616178879 is a deficient number, since it is larger than the sum of its proper divisors (1).

616178879 is an equidigital number, since it uses as much as digits as its factorization.

616178879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 53.

The square root of 616178879 is about 24822.9506505572. The cubic root of 616178879 is about 850.9465252970.

The spelling of 616178879 in words is "six hundred sixteen million, one hundred seventy-eight thousand, eight hundred seventy-nine".