720975612 has 72 divisors (see below), whose sum is σ = 2024462160. Its totient is φ = 198885120.

The previous prime is 720975601. The next prime is 720975617. The reversal of 720975612 is 216579027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720975617) 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 in 23 ways as a sum of consecutive naturals, for example, 4089 + ... + 38192.

It is an arithmetic number, because the mean of its divisors is an integer number (28117530).

Almost surely, 2^720975612 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 720975612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1012231080).

720975612 is an abundant number, since it is smaller than the sum of its proper divisors (1303486548).

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

720975612 is a wasteful number, since it uses less digits than its factorization.

720975612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42331 (or 42322 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 720975612 is about 26850.9890320636. The cubic root of 720975612 is about 896.6855918088.

The spelling of 720975612 in words is "seven hundred twenty million, nine hundred seventy-five thousand, six hundred twelve".