723172 has 6 divisors (see below), whose sum is σ = 1265558. Its totient is φ = 361584.

The previous prime is 723169. The next prime is 723181. The reversal of 723172 is 271327.

It can be written as a sum of positive squares in only one way, i.e., 541696 + 181476 = 736^2 + 426^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90393 + ... + 90400.

2⁷²³¹⁷² is an apocalyptic number.

It is an amenable number.

723172 is a deficient number, since it is larger than the sum of its proper divisors (542386).

723172 is a wasteful number, since it uses less digits than its factorization.

723172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180797 (or 180795 counting only the distinct ones).

The product of its digits is 588, while the sum is 22.

The square root of 723172 is about 850.3952022442. The cubic root of 723172 is about 89.7595226329.

Adding to 723172 its reverse (271327), we get a palindrome (994499).

The spelling of 723172 in words is "seven hundred twenty-three thousand, one hundred seventy-two", and thus it is an iban number.