709986065 has 16 divisors (see below), whose sum is σ = 861884496. Its totient is φ = 561408000.

The previous prime is 709986059. The next prime is 709986077. The reversal of 709986065 is 560689907.

It can be written as a sum of positive squares in 8 ways, for example, as 79423744 + 630562321 = 8912^2 + 25111^2 .

It is not a de Polignac number, because 709986065 - 2⁶ = 709986001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520985 + ... + 522345.

It is an arithmetic number, because the mean of its divisors is an integer number (53867781).

Almost surely, 2^709986065 is an apocalyptic number.

It is an amenable number.

709986065 is a deficient number, since it is larger than the sum of its proper divisors (151898431).

709986065 is a wasteful number, since it uses less digits than its factorization.

709986065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 709986065 is about 26645.5637020499. The cubic root of 709986065 is about 892.1063039837.

The spelling of 709986065 in words is "seven hundred nine million, nine hundred eighty-six thousand, sixty-five".