722423 has 8 divisors (see below), whose sum is σ = 791616. Its totient is φ = 655200.

The previous prime is 722417. The next prime is 722431. The reversal of 722423 is 324227.

It is a happy number.

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

It is not a de Polignac number, because 722423 - 2⁸ = 722167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 722395 and 722404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722023) 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, 338 + ... + 1248.

It is an arithmetic number, because the mean of its divisors is an integer number (98952).

2⁷²²⁴²³ is an apocalyptic number.

722423 is a deficient number, since it is larger than the sum of its proper divisors (69193).

722423 is a wasteful number, since it uses less digits than its factorization.

722423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985.

The product of its digits is 672, while the sum is 20.

The square root of 722423 is about 849.9547046755. The cubic root of 722423 is about 89.7285235039.

The spelling of 722423 in words is "seven hundred twenty-two thousand, four hundred twenty-three", and thus it is an iban number.