722000 has 60 divisors (see below), whose sum is σ = 1842516. Its totient is φ = 273600.

The previous prime is 721997. The next prime is 722011. The reversal of 722000 is 227.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 23104 + 698896 = 152^2 + 836^2 .

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37991 + ... + 38009.

2⁷²²⁰⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (921258).

722000 is an abundant number, since it is smaller than the sum of its proper divisors (1120516).

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

722000 is a wasteful number, since it uses less digits than its factorization.

722000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 26 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 11.

The square root of 722000 is about 849.7058314499. The cubic root of 722000 is about 89.7110071846.

Adding to 722000 its reverse (227), we get a palindrome (722227).

The spelling of 722000 in words is "seven hundred twenty-two thousand", and thus it is an iban number.