864650709 has 24 divisors (see below), whose sum is σ = 1363969152. Its totient is φ = 524593440.

The previous prime is 864650659. The next prime is 864650737. The reversal of 864650709 is 907056468.

864650709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 864650709 - 2⁷ = 864650581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864650789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43737 + ... + 60350.

It is an arithmetic number, because the mean of its divisors is an integer number (56832048).

Almost surely, 2^864650709 is an apocalyptic number.

It is an amenable number.

864650709 is a deficient number, since it is larger than the sum of its proper divisors (499318443).

864650709 is a wasteful number, since it uses less digits than its factorization.

864650709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104177 (or 104174 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 864650709 is about 29404.9436149774. The cubic root of 864650709 is about 952.6796767703.

The spelling of 864650709 in words is "eight hundred sixty-four million, six hundred fifty thousand, seven hundred nine".