616268977 has 2 divisors, whose sum is σ = 616268978. Its totient is φ = 616268976.

The previous prime is 616268963. The next prime is 616269013. The reversal of 616268977 is 779862616.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596873761 + 19395216 = 24431^2 + 4404^2 .

It is a cyclic number.

It is not a de Polignac number, because 616268977 - 2¹⁵ = 616236209 is a prime.

It is not a weakly prime, because it can be changed into another prime (616268927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308134488 + 308134489.

It is an arithmetic number, because the mean of its divisors is an integer number (308134489).

Almost surely, 2^616268977 is an apocalyptic number.

It is an amenable number.

616268977 is a deficient number, since it is larger than the sum of its proper divisors (1).

616268977 is an equidigital number, since it uses as much as digits as its factorization.

616268977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 52.

The square root of 616268977 is about 24824.7653966760. The cubic root of 616268977 is about 850.9879985585.

The spelling of 616268977 in words is "six hundred sixteen million, two hundred sixty-eight thousand, nine hundred seventy-seven".