722913 has 8 divisors (see below), whose sum is σ = 1005888. Its totient is φ = 460944.

The previous prime is 722903. The next prime is 722921. The reversal of 722913 is 319227.

722913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 722913 - 2⁵ = 722881 is a prime.

It is a super-3 number, since 3×722913³ = 1133389953442507491, which contains 333 as substring.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (722903) 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, 5170 + ... + 5307.

It is an arithmetic number, because the mean of its divisors is an integer number (125736).

2⁷²²⁹¹³ is an apocalyptic number.

It is an amenable number.

722913 is a deficient number, since it is larger than the sum of its proper divisors (282975).

722913 is a wasteful number, since it uses less digits than its factorization.

722913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10503.

The product of its digits is 756, while the sum is 24.

The square root of 722913 is about 850.2429064685. The cubic root of 722913 is about 89.7488057300.

The spelling of 722913 in words is "seven hundred twenty-two thousand, nine hundred thirteen".