722851 has 4 divisors (see below), whose sum is σ = 733104. Its totient is φ = 712600.

The previous prime is 722849. The next prime is 722881. The reversal of 722851 is 158227.

722851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 722851 - 2¹ = 722849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722881) 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, 5020 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (183276).

2⁷²²⁸⁵¹ is an apocalyptic number.

722851 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

722851 is a deficient number, since it is larger than the sum of its proper divisors (10253).

722851 is a wasteful number, since it uses less digits than its factorization.

722851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10252.

The product of its digits is 1120, while the sum is 25.

The square root of 722851 is about 850.2064455178. The cubic root of 722851 is about 89.7462399141.

The spelling of 722851 in words is "seven hundred twenty-two thousand, eight hundred fifty-one".