724057704 has 80 divisors (see below), whose sum is σ = 2077572420. Its totient is φ = 235457280.

The previous prime is 724057661. The next prime is 724057709. The reversal of 724057704 is 407750427.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 670913604 + 53144100 = 25902^2 + 7290^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (724057709) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12942 + ... + 40194.

Almost surely, 2^724057704 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 724057704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1038786210).

724057704 is an abundant number, since it is smaller than the sum of its proper divisors (1353514716).

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

724057704 is a wasteful number, since it uses less digits than its factorization.

724057704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27312 (or 27299 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 724057704 is about 26908.3203489181. The cubic root of 724057704 is about 897.9615197060.

The spelling of 724057704 in words is "seven hundred twenty-four million, fifty-seven thousand, seven hundred four".