722626861 has 8 divisors (see below), whose sum is σ = 788940864. Its totient is φ = 656416320.

The previous prime is 722626859. The next prime is 722626873. The reversal of 722626861 is 168626227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 722626861 - 2¹ = 722626859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722626831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10876 + ... + 39541.

It is an arithmetic number, because the mean of its divisors is an integer number (98617608).

Almost surely, 2^722626861 is an apocalyptic number.

It is an amenable number.

722626861 is a deficient number, since it is larger than the sum of its proper divisors (66314003).

722626861 is a wasteful number, since it uses less digits than its factorization.

722626861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51731.

The product of its digits is 96768, while the sum is 40.

The square root of 722626861 is about 26881.7198296538. The cubic root of 722626861 is about 897.3696289296.

The spelling of 722626861 in words is "seven hundred twenty-two million, six hundred twenty-six thousand, eight hundred sixty-one".