722438723 has 8 divisors (see below), whose sum is σ = 731808000. Its totient is φ = 713085448.

The previous prime is 722438713. The next prime is 722438753. The reversal of 722438723 is 327834227.

It is a happy number.

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 722438723 - 2⁸ = 722438467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722438713) 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, 106178 + ... + 112776.

It is an arithmetic number, because the mean of its divisors is an integer number (91476000).

Almost surely, 2^722438723 is an apocalyptic number.

722438723 is a deficient number, since it is larger than the sum of its proper divisors (9369277).

722438723 is a wasteful number, since it uses less digits than its factorization.

722438723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8001.

The product of its digits is 112896, while the sum is 38.

The square root of 722438723 is about 26878.2202349784. The cubic root of 722438723 is about 897.2917445745.

The spelling of 722438723 in words is "seven hundred twenty-two million, four hundred thirty-eight thousand, seven hundred twenty-three".