709728265 has 16 divisors (see below), whose sum is σ = 886691088. Its totient is φ = 544859136.

The previous prime is 709728241. The next prime is 709728289. The reversal of 709728265 is 562827907.

It is an interprime number because it is at equal distance from previous prime (709728241) and next prime (709728289).

It can be written as a sum of positive squares in 8 ways, for example, as 130507776 + 579220489 = 11424^2 + 24067^2 .

It is a cyclic number.

It is not a de Polignac number, because 709728265 - 2⁵ = 709728233 is a prime.

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, 12772 + ... + 39781.

It is an arithmetic number, because the mean of its divisors is an integer number (55418193).

Almost surely, 2^709728265 is an apocalyptic number.

It is an amenable number.

709728265 is a deficient number, since it is larger than the sum of its proper divisors (176962823).

709728265 is a wasteful number, since it uses less digits than its factorization.

709728265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52668.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 709728265 is about 26640.7256845605. The cubic root of 709728265 is about 891.9983146120.

The spelling of 709728265 in words is "seven hundred nine million, seven hundred twenty-eight thousand, two hundred sixty-five".