722590 has 16 divisors (see below), whose sum is σ = 1419120. Its totient is φ = 262720.

The previous prime is 722581. The next prime is 722599. The reversal of 722590 is 95227.

722590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (722581) and next prime (722599).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722599) by changing a digit.

722590 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 7 ways as a sum of consecutive naturals, for example, 3175 + ... + 3394.

It is an arithmetic number, because the mean of its divisors is an integer number (88695).

2⁷²²⁵⁹⁰ is an apocalyptic number.

722590 is a deficient number, since it is larger than the sum of its proper divisors (696530).

722590 is a wasteful number, since it uses less digits than its factorization.

722590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6587.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 722590 is about 850.0529395279. The cubic root of 722590 is about 89.7354370476.

It can be divided in two parts, 72 and 2590, that added together give a palindrome (2662).

The spelling of 722590 in words is "seven hundred twenty-two thousand, five hundred ninety".