722454 has 12 divisors (see below), whose sum is σ = 1449084. Its totient is φ = 240124.

The previous prime is 722431. The next prime is 722459. The reversal of 722454 is 454227.

It is a d-powerful number, because it can be written as 7² + 2¹⁶ + 4 + 2¹⁸ + 5⁸ + 4⁶ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722459) by changing a digit.

722454 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 5 ways as a sum of consecutive naturals, for example, 1909 + ... + 2255.

It is an arithmetic number, because the mean of its divisors is an integer number (120757).

2⁷²²⁴⁵⁴ is an apocalyptic number.

722454 is an abundant number, since it is smaller than the sum of its proper divisors (726630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722454 is an equidigital number, since it uses as much as digits as its factorization.

722454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 352 counting only the distinct ones).

The product of its digits is 2240, while the sum is 24.

The square root of 722454 is about 849.9729407458. The cubic root of 722454 is about 89.7298069369.

Multiplying 722454 by its sum of digits (24), we get a square (17338896 = 4164²).

It can be divided in two parts, 722 and 454, that added together give a triangular number (1176 = T₄₈).

The spelling of 722454 in words is "seven hundred twenty-two thousand, four hundred fifty-four".