616452961 has 2 divisors, whose sum is σ = 616452962. Its totient is φ = 616452960.

The previous prime is 616452943. The next prime is 616452973. The reversal of 616452961 is 169254616.

It is a happy number.

616452961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473889361 + 142563600 = 21769^2 + 11940^2 .

It is a cyclic number.

It is not a de Polignac number, because 616452961 - 2⁷ = 616452833 is a prime.

It is not a weakly prime, because it can be changed into another prime (616402961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308226480 + 308226481.

It is an arithmetic number, because the mean of its divisors is an integer number (308226481).

Almost surely, 2^616452961 is an apocalyptic number.

It is an amenable number.

616452961 is a deficient number, since it is larger than the sum of its proper divisors (1).

616452961 is an equidigital number, since it uses as much as digits as its factorization.

616452961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 616452961 is about 24828.4707744960. The cubic root of 616452961 is about 851.0726761931.

The spelling of 616452961 in words is "six hundred sixteen million, four hundred fifty-two thousand, nine hundred sixty-one".