612668461 has 2 divisors, whose sum is σ = 612668462. Its totient is φ = 612668460.

The previous prime is 612668431. The next prime is 612668467. The reversal of 612668461 is 164866216.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595652836 + 17015625 = 24406^2 + 4125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612668461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612668467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306334230 + 306334231.

It is an arithmetic number, because the mean of its divisors is an integer number (306334231).

Almost surely, 2^612668461 is an apocalyptic number.

It is an amenable number.

612668461 is a deficient number, since it is larger than the sum of its proper divisors (1).

612668461 is an equidigital number, since it uses as much as digits as its factorization.

612668461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 612668461 is about 24752.1405336993. The cubic root of 612668461 is about 849.3274777275.

The spelling of 612668461 in words is "six hundred twelve million, six hundred sixty-eight thousand, four hundred sixty-one".