612716591897 has 2 divisors, whose sum is σ = 612716591898. Its totient is φ = 612716591896.

The previous prime is 612716591867. The next prime is 612716591909. The reversal of 612716591897 is 798195617216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445550910016 + 167165681881 = 667496^2 + 408859^2 .

It is a cyclic number.

It is not a de Polignac number, because 612716591897 - 2¹⁰ = 612716590873 is a prime.

It is not a weakly prime, because it can be changed into another prime (612716591867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306358295948 + 306358295949.

It is an arithmetic number, because the mean of its divisors is an integer number (306358295949).

Almost surely, 2^612716591897 is an apocalyptic number.

It is an amenable number.

612716591897 is a deficient number, since it is larger than the sum of its proper divisors (1).

612716591897 is an equidigital number, since it uses as much as digits as its factorization.

612716591897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11430720, while the sum is 62.

The spelling of 612716591897 in words is "six hundred twelve billion, seven hundred sixteen million, five hundred ninety-one thousand, eight hundred ninety-seven".