722754731 has 4 divisors (see below), whose sum is σ = 723315864. Its totient is φ = 722193600.

The previous prime is 722754727. The next prime is 722754743. The reversal of 722754731 is 137457227.

722754731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 722754731 - 2² = 722754727 is a prime.

It is a super-2 number, since 2×722754731² = 1044748802365764722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722754701) 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, 278630 + ... + 281211.

It is an arithmetic number, because the mean of its divisors is an integer number (180828966).

Almost surely, 2^722754731 is an apocalyptic number.

722754731 is a deficient number, since it is larger than the sum of its proper divisors (561133).

722754731 is a wasteful number, since it uses less digits than its factorization.

722754731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561132.

The product of its digits is 82320, while the sum is 38.

The square root of 722754731 is about 26884.0981065015. The cubic root of 722754731 is about 897.4225561470.

The spelling of 722754731 in words is "seven hundred twenty-two million, seven hundred fifty-four thousand, seven hundred thirty-one".