722753 has 4 divisors (see below), whose sum is σ = 725040. Its totient is φ = 720468.

The previous prime is 722749. The next prime is 722783. The reversal of 722753 is 357227.

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, and also an emirpimes, since its reverse is a distinct semiprime: 357227 = 13 ⋅27479.

It is a cyclic number.

It is not a de Polignac number, because 722753 - 2² = 722749 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722713) 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, 575 + ... + 1332.

It is an arithmetic number, because the mean of its divisors is an integer number (181260).

2⁷²²⁷⁵³ is an apocalyptic number.

It is an amenable number.

722753 is a deficient number, since it is larger than the sum of its proper divisors (2287).

722753 is a wasteful number, since it uses less digits than its factorization.

722753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286.

The product of its digits is 2940, while the sum is 26.

The square root of 722753 is about 850.1488105032. The cubic root of 722753 is about 89.7421839703.

The spelling of 722753 in words is "seven hundred twenty-two thousand, seven hundred fifty-three".