722670 has 64 divisors (see below), whose sum is σ = 1995840. Its totient is φ = 165888.

The previous prime is 722669. The next prime is 722713. The reversal of 722670 is 76227.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 722670.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6576 + ... + 6684.

It is an arithmetic number, because the mean of its divisors is an integer number (31185).

2⁷²²⁶⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997920).

722670 is an abundant number, since it is smaller than the sum of its proper divisors (1273170).

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

722670 is a wasteful number, since it uses less digits than its factorization.

722670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 722670 is about 850.0999941183. The cubic root of 722670 is about 89.7387485475.

Adding to 722670 its reverse (76227), we get a palindrome (798897).

The spelling of 722670 in words is "seven hundred twenty-two thousand, six hundred seventy".