612431569 has 2 divisors, whose sum is σ = 612431570. Its totient is φ = 612431568.

The previous prime is 612431551. The next prime is 612431627. The reversal of 612431569 is 965134216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471107025 + 141324544 = 21705^2 + 11888^2 .

It is a cyclic number.

It is not a de Polignac number, because 612431569 - 2¹⁷ = 612300497 is a prime.

It is a super-2 number, since 2×612431569² = 750144853415603522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (612431539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306215784 + 306215785.

It is an arithmetic number, because the mean of its divisors is an integer number (306215785).

Almost surely, 2^612431569 is an apocalyptic number.

It is an amenable number.

612431569 is a deficient number, since it is larger than the sum of its proper divisors (1).

612431569 is an equidigital number, since it uses as much as digits as its factorization.

612431569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 612431569 is about 24747.3547879364. The cubic root of 612431569 is about 849.2179977315.

The spelling of 612431569 in words is "six hundred twelve million, four hundred thirty-one thousand, five hundred sixty-nine".