720760724 has 6 divisors (see below), whose sum is σ = 1261331274. Its totient is φ = 360380360.

The previous prime is 720760723. The next prime is 720760769. The reversal of 720760724 is 427067027.

It can be written as a sum of positive squares in only one way, i.e., 676936324 + 43824400 = 26018^2 + 6620^2 .

It is a super-2 number, since 2×720760724² = 1038992042522008352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720760721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90095087 + ... + 90095094.

It is an arithmetic number, because the mean of its divisors is an integer number (210221879).

Almost surely, 2^720760724 is an apocalyptic number.

It is an amenable number.

720760724 is a deficient number, since it is larger than the sum of its proper divisors (540570550).

720760724 is a wasteful number, since it uses less digits than its factorization.

720760724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180190185 (or 180190183 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 720760724 is about 26846.9872425194. The cubic root of 720760724 is about 896.5964967377.

The spelling of 720760724 in words is "seven hundred twenty million, seven hundred sixty thousand, seven hundred twenty-four".