722056 has 16 divisors (see below), whose sum is σ = 1386000. Its totient is φ = 352464.

The previous prime is 722047. The next prime is 722063. The reversal of 722056 is 650227.

It is an unprimeable number.

722056 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706 + ... + 1393.

It is an arithmetic number, because the mean of its divisors is an integer number (86625).

2⁷²²⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

722056 is a deficient number, since it is larger than the sum of its proper divisors (663944).

722056 is a wasteful number, since it uses less digits than its factorization.

722056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148 (or 2144 counting only the distinct ones).

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

The square root of 722056 is about 849.7387833917. The cubic root of 722056 is about 89.7133265228.

The spelling of 722056 in words is "seven hundred twenty-two thousand, fifty-six".