724456560 has 80 divisors (see below), whose sum is σ = 2265774624. Its totient is φ = 191471616.

The previous prime is 724456549. The next prime is 724456583. The reversal of 724456560 is 65654427.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 13764 + ... + 40476.

Almost surely, 2^724456560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 724456560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132887312).

724456560 is an abundant number, since it is smaller than the sum of its proper divisors (1541318064).

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

724456560 is a wasteful number, since it uses less digits than its factorization.

724456560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26842 (or 26836 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 724456560 is about 26915.7307164416. The cubic root of 724456560 is about 898.1263737837.

The spelling of 724456560 in words is "seven hundred twenty-four million, four hundred fifty-six thousand, five hundred sixty".