724257564 has 12 divisors (see below), whose sum is σ = 1689934344. Its totient is φ = 241419184.

The previous prime is 724257551. The next prime is 724257577. The reversal of 724257564 is 465752427.

724257564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (724257551) and next prime (724257577).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×724257564² = 1049098038022428192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30177387 + ... + 30177410.

It is an arithmetic number, because the mean of its divisors is an integer number (140827862).

Almost surely, 2^724257564 is an apocalyptic number.

It is an amenable number.

724257564 is an abundant number, since it is smaller than the sum of its proper divisors (965676780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

724257564 is a wasteful number, since it uses less digits than its factorization.

724257564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60354804 (or 60354802 counting only the distinct ones).

The product of its digits is 470400, while the sum is 42.

The square root of 724257564 is about 26912.0338138908. The cubic root of 724257564 is about 898.0441328634.

The spelling of 724257564 in words is "seven hundred twenty-four million, two hundred fifty-seven thousand, five hundred sixty-four".