722863 has 4 divisors (see below), whose sum is σ = 733720. Its totient is φ = 712008.

The previous prime is 722849. The next prime is 722881. The reversal of 722863 is 368227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 722863 - 2¹⁷ = 591791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722833) 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, 5328 + ... + 5461.

It is an arithmetic number, because the mean of its divisors is an integer number (183430).

2⁷²²⁸⁶³ is an apocalyptic number.

722863 is a deficient number, since it is larger than the sum of its proper divisors (10857).

722863 is a wasteful number, since it uses less digits than its factorization.

722863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10856.

The product of its digits is 4032, while the sum is 28.

The square root of 722863 is about 850.2135025980. The cubic root of 722863 is about 89.7467365350.

The spelling of 722863 in words is "seven hundred twenty-two thousand, eight hundred sixty-three".