724117345 has 12 divisors (see below), whose sum is σ = 1010809044. Its totient is φ = 496537440.

The previous prime is 724117337. The next prime is 724117399. The reversal of 724117345 is 543711427.

It can be written as a sum of positive squares in 2 ways, for example, as 462422016 + 261695329 = 21504^2 + 16177^2 .

It is not a de Polignac number, because 724117345 - 2³ = 724117337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 724117345.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1477546 + ... + 1478035.

It is an arithmetic number, because the mean of its divisors is an integer number (84234087).

Almost surely, 2^724117345 is an apocalyptic number.

It is an amenable number.

724117345 is a deficient number, since it is larger than the sum of its proper divisors (286691699).

724117345 is a wasteful number, since it uses less digits than its factorization.

724117345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955600 (or 2955593 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 724117345 is about 26909.4285520893. The cubic root of 724117345 is about 897.9861742109.

The spelling of 724117345 in words is "seven hundred twenty-four million, one hundred seventeen thousand, three hundred forty-five".