722650 has 24 divisors (see below), whose sum is σ = 1367100. Its totient is φ = 284160.

The previous prime is 722639. The next prime is 722663. The reversal of 722650 is 56227.

722650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 109561 + 613089 = 331^2 + 783^2 .

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, 4776 + ... + 4924.

2⁷²²⁶⁵⁰ is an apocalyptic number.

722650 is a deficient number, since it is larger than the sum of its proper divisors (644450).

722650 is a wasteful number, since it uses less digits than its factorization.

722650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 722650 is about 850.0882307149. The cubic root of 722650 is about 89.7379206954.

Adding to 722650 its reverse (56227), we get a palindrome (778877).

The spelling of 722650 in words is "seven hundred twenty-two thousand, six hundred fifty".