712135709 has 2 divisors, whose sum is σ = 712135710. Its totient is φ = 712135708.

The previous prime is 712135693. The next prime is 712135733. The reversal of 712135709 is 907531217.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 575760025 + 136375684 = 23995^2 + 11678^2 .

It is a cyclic number.

It is not a de Polignac number, because 712135709 - 2⁴ = 712135693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (712135009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356067854 + 356067855.

It is an arithmetic number, because the mean of its divisors is an integer number (356067855).

Almost surely, 2^712135709 is an apocalyptic number.

It is an amenable number.

712135709 is a deficient number, since it is larger than the sum of its proper divisors (1).

712135709 is an equidigital number, since it uses as much as digits as its factorization.

712135709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 712135709 is about 26685.8709619904. The cubic root of 712135709 is about 893.0057482930.

The spelling of 712135709 in words is "seven hundred twelve million, one hundred thirty-five thousand, seven hundred nine".