723622 has 8 divisors (see below), whose sum is σ = 1149336. Its totient is φ = 340512.

The previous prime is 723617. The next prime is 723623. The reversal of 723622 is 226327.

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

It is a junction number, because it is equal to n+sod(n) for n = 723593 and 723602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723623) by changing a digit.

723622 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10608 + ... + 10675.

It is an arithmetic number, because the mean of its divisors is an integer number (143667).

2⁷²³⁶²² is an apocalyptic number.

723622 is a deficient number, since it is larger than the sum of its proper divisors (425714).

723622 is a wasteful number, since it uses less digits than its factorization.

723622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21302.

The product of its digits is 1008, while the sum is 22.

The square root of 723622 is about 850.6597439635. The cubic root of 723622 is about 89.7781366509.

Adding to 723622 its reverse (226327), we get a palindrome (949949).

The spelling of 723622 in words is "seven hundred twenty-three thousand, six hundred twenty-two".