722526 has 16 divisors (see below), whose sum is σ = 1651584. Its totient is φ = 206424.

The previous prime is 722521. The next prime is 722537. The reversal of 722526 is 625227.

722526 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 722496 and 722505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722521) 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, 8560 + ... + 8643.

It is an arithmetic number, because the mean of its divisors is an integer number (103224).

2⁷²²⁵²⁶ is an apocalyptic number.

722526 is an abundant number, since it is smaller than the sum of its proper divisors (929058).

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

722526 is a wasteful number, since it uses less digits than its factorization.

722526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17215.

The product of its digits is 1680, while the sum is 24.

The square root of 722526 is about 850.0152939801. The cubic root of 722526 is about 89.7327876718.

Adding to 722526 its product of digits (1680), we get a triangular number (724206 = T₁₂₀₃).

The spelling of 722526 in words is "seven hundred twenty-two thousand, five hundred twenty-six".