724913065 has 32 divisors (see below), whose sum is σ = 964029600. Its totient is φ = 520925184.

The previous prime is 724913039. The next prime is 724913071. The reversal of 724913065 is 560319427.

It can be written as a sum of positive squares in 16 ways, for example, as 59892121 + 665020944 = 7739^2 + 25788^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724913065 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164511 + ... + 168859.

It is an arithmetic number, because the mean of its divisors is an integer number (30125925).

Almost surely, 2^724913065 is an apocalyptic number.

It is an amenable number.

724913065 is a deficient number, since it is larger than the sum of its proper divisors (239116535).

724913065 is a wasteful number, since it uses less digits than its factorization.

724913065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 724913065 is about 26924.2096448531. The cubic root of 724913065 is about 898.3149809479.

The spelling of 724913065 in words is "seven hundred twenty-four million, nine hundred thirteen thousand, sixty-five".