722786 has 8 divisors (see below), whose sum is σ = 1087824. Its totient is φ = 360180.

The previous prime is 722783. The next prime is 722791. The reversal of 722786 is 687227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (722783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701 + ... + 1391.

It is an arithmetic number, because the mean of its divisors is an integer number (135978).

2⁷²²⁷⁸⁶ is an apocalyptic number.

722786 is a deficient number, since it is larger than the sum of its proper divisors (365038).

722786 is a wasteful number, since it uses less digits than its factorization.

722786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216.

The product of its digits is 9408, while the sum is 32.

The square root of 722786 is about 850.1682186485. The cubic root of 722786 is about 89.7435497882.

The spelling of 722786 in words is "seven hundred twenty-two thousand, seven hundred eighty-six".