712023709 has 2 divisors, whose sum is σ = 712023710. Its totient is φ = 712023708.

The previous prime is 712023703. The next prime is 712023721. The reversal of 712023709 is 907320217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711715684 + 308025 = 26678^2 + 555^2 .

It is an emirp because it is prime and its reverse (907320217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 712023709 - 2¹⁵ = 711990941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (712023703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356011854 + 356011855.

It is an arithmetic number, because the mean of its divisors is an integer number (356011855).

Almost surely, 2^712023709 is an apocalyptic number.

It is an amenable number.

712023709 is a deficient number, since it is larger than the sum of its proper divisors (1).

712023709 is an equidigital number, since it uses as much as digits as its factorization.

712023709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 712023709 is about 26683.7723907247. The cubic root of 712023709 is about 892.9589304902.

The spelling of 712023709 in words is "seven hundred twelve million, twenty-three thousand, seven hundred nine".