612564210697 has 2 divisors, whose sum is σ = 612564210698. Its totient is φ = 612564210696.

The previous prime is 612564210689. The next prime is 612564210721. The reversal of 612564210697 is 796012465216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 589940741776 + 22623468921 = 768076^2 + 150411^2 .

It is a cyclic number.

It is not a de Polignac number, because 612564210697 - 2³ = 612564210689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612564210697.

It is not a weakly prime, because it can be changed into another prime (612564210617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306282105348 + 306282105349.

It is an arithmetic number, because the mean of its divisors is an integer number (306282105349).

Almost surely, 2^612564210697 is an apocalyptic number.

It is an amenable number.

612564210697 is a deficient number, since it is larger than the sum of its proper divisors (1).

612564210697 is an equidigital number, since it uses as much as digits as its factorization.

612564210697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 612564210697 in words is "six hundred twelve billion, five hundred sixty-four million, two hundred ten thousand, six hundred ninety-seven".