712545817 has 2 divisors, whose sum is σ = 712545818. Its totient is φ = 712545816.

The previous prime is 712545797. The next prime is 712545829. The reversal of 712545817 is 718545217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 650199001 + 62346816 = 25499^2 + 7896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-712545817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 712545817.

It is not a weakly prime, because it can be changed into another prime (712545857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356272908 + 356272909.

It is an arithmetic number, because the mean of its divisors is an integer number (356272909).

Almost surely, 2^712545817 is an apocalyptic number.

It is an amenable number.

712545817 is a deficient number, since it is larger than the sum of its proper divisors (1).

712545817 is an equidigital number, since it uses as much as digits as its factorization.

712545817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78400, while the sum is 40.

The square root of 712545817 is about 26693.5538473243. The cubic root of 712545817 is about 893.1771381547.

The spelling of 712545817 in words is "seven hundred twelve million, five hundred forty-five thousand, eight hundred seventeen".