712777669 has 2 divisors, whose sum is σ = 712777670. Its totient is φ = 712777668.

The previous prime is 712777651. The next prime is 712777679. The reversal of 712777669 is 966777217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670136769 + 42640900 = 25887^2 + 6530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-712777669 is a prime.

It is a super-2 number, since 2×712777669² = 1016104010850147122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (712777679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356388834 + 356388835.

It is an arithmetic number, because the mean of its divisors is an integer number (356388835).

Almost surely, 2^712777669 is an apocalyptic number.

It is an amenable number.

712777669 is a deficient number, since it is larger than the sum of its proper divisors (1).

712777669 is an equidigital number, since it uses as much as digits as its factorization.

712777669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555848, while the sum is 52.

The square root of 712777669 is about 26697.8963403486. The cubic root of 712777669 is about 893.2740032470.

The spelling of 712777669 in words is "seven hundred twelve million, seven hundred seventy-seven thousand, six hundred sixty-nine".