723270072644 has 24 divisors (see below), whose sum is σ = 1446561906048. Its totient is φ = 309968225280.

The previous prime is 723270072619. The next prime is 723270072653. The reversal of 723270072644 is 446270072327.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 723270072595 and 723270072604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2231657 + ... + 2535119.

It is an arithmetic number, because the mean of its divisors is an integer number (60273412752).

Almost surely, 2^723270072644 is an apocalyptic number.

It is an amenable number.

723270072644 is an abundant number, since it is smaller than the sum of its proper divisors (723291833404).

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

723270072644 is a wasteful number, since it uses less digits than its factorization.

723270072644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388595 (or 388593 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 44.

The spelling of 723270072644 in words is "seven hundred twenty-three billion, two hundred seventy million, seventy-two thousand, six hundred forty-four".