722466 has 32 divisors (see below), whose sum is σ = 1702080. Its totient is φ = 226368.

The previous prime is 722459. The next prime is 722467. The reversal of 722466 is 664227.

722466 = T₉₁ + T₉₂ + ... + T₁₇₁.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722467) by changing a digit.

722466 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525 + ... + 1311.

It is an arithmetic number, because the mean of its divisors is an integer number (53190).

2⁷²²⁴⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851040).

722466 is an abundant number, since it is smaller than the sum of its proper divisors (979614).

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

722466 is a wasteful number, since it uses less digits than its factorization.

722466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 809 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 722466 is about 849.9799997647. The cubic root of 722466 is about 89.7303037398.

The spelling of 722466 in words is "seven hundred twenty-two thousand, four hundred sixty-six".