712816709 has 4 divisors (see below), whose sum is σ = 777618240. Its totient is φ = 648015180.

The previous prime is 712816703. The next prime is 712816717. The reversal of 712816709 is 907618217.

712816709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 712816709 - 2⁸ = 712816453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712816703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32400749 + ... + 32400770.

It is an arithmetic number, because the mean of its divisors is an integer number (194404560).

Almost surely, 2^712816709 is an apocalyptic number.

It is an amenable number.

712816709 is a deficient number, since it is larger than the sum of its proper divisors (64801531).

712816709 is a wasteful number, since it uses less digits than its factorization.

712816709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64801530.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 712816709 is about 26698.6274740856. The cubic root of 712816709 is about 893.2903116426.

The spelling of 712816709 in words is "seven hundred twelve million, eight hundred sixteen thousand, seven hundred nine".