720172760 has 16 divisors (see below), whose sum is σ = 1620388800. Its totient is φ = 288069088.

The previous prime is 720172759. The next prime is 720172763. The reversal of 720172760 is 67271027.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720172763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9002120 + ... + 9002199.

It is an arithmetic number, because the mean of its divisors is an integer number (101274300).

Almost surely, 2^720172760 is an apocalyptic number.

It is an amenable number.

720172760 is an abundant number, since it is smaller than the sum of its proper divisors (900216040).

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

720172760 is a wasteful number, since it uses less digits than its factorization.

720172760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18004330 (or 18004326 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 720172760 is about 26836.0347294454. The cubic root of 720172760 is about 896.3526294568.

The spelling of 720172760 in words is "seven hundred twenty million, one hundred seventy-two thousand, seven hundred sixty".