612561673 has 2 divisors, whose sum is σ = 612561674. Its totient is φ = 612561672.

The previous prime is 612561647. The next prime is 612561701. The reversal of 612561673 is 376165216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 604569744 + 7991929 = 24588^2 + 2827^2 .

It is a cyclic number.

It is not a de Polignac number, because 612561673 - 2⁹ = 612561161 is a prime.

It is not a weakly prime, because it can be changed into another prime (612561613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306280836 + 306280837.

It is an arithmetic number, because the mean of its divisors is an integer number (306280837).

Almost surely, 2^612561673 is an apocalyptic number.

It is an amenable number.

612561673 is a deficient number, since it is larger than the sum of its proper divisors (1).

612561673 is an equidigital number, since it uses as much as digits as its factorization.

612561673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 612561673 is about 24749.9832929237. The cubic root of 612561673 is about 849.2781289859.

The spelling of 612561673 in words is "six hundred twelve million, five hundred sixty-one thousand, six hundred seventy-three".