722624109 has 4 divisors (see below), whose sum is σ = 963498816. Its totient is φ = 481749404.

The previous prime is 722624099. The next prime is 722624113. The reversal of 722624109 is 901426227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 722624109 - 2⁹ = 722623597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722624109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722620109) 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, 120437349 + ... + 120437354.

It is an arithmetic number, because the mean of its divisors is an integer number (240874704).

Almost surely, 2^722624109 is an apocalyptic number.

It is an amenable number.

722624109 is a deficient number, since it is larger than the sum of its proper divisors (240874707).

722624109 is a wasteful number, since it uses less digits than its factorization.

722624109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240874706.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 722624109 is about 26881.6686424039. The cubic root of 722624109 is about 897.3684897689.

The spelling of 722624109 in words is "seven hundred twenty-two million, six hundred twenty-four thousand, one hundred nine".