722807 has 2 divisors, whose sum is σ = 722808. Its totient is φ = 722806.

The previous prime is 722797. The next prime is 722819. The reversal of 722807 is 708227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 722807 - 2⁴ = 722791 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361403 + 361404.

It is an arithmetic number, because the mean of its divisors is an integer number (361404).

2⁷²²⁸⁰⁷ is an apocalyptic number.

722807 is a deficient number, since it is larger than the sum of its proper divisors (1).

722807 is an equidigital number, since it uses as much as digits as its factorization.

722807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 722807 is about 850.1805690558. The cubic root of 722807 is about 89.7444189234.

The spelling of 722807 in words is "seven hundred twenty-two thousand, eight hundred seven".