872723 has 4 divisors (see below), whose sum is σ = 874608. Its totient is φ = 870840.

The previous prime is 872687. The next prime is 872731. The reversal of 872723 is 327278.

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 872723 - 2⁶ = 872659 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872023) 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, 290 + ... + 1352.

It is an arithmetic number, because the mean of its divisors is an integer number (218652).

2⁸⁷²⁷²³ is an apocalyptic number.

872723 is a deficient number, since it is larger than the sum of its proper divisors (1885).

872723 is a wasteful number, since it uses less digits than its factorization.

872723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884.

The product of its digits is 4704, while the sum is 29.

The square root of 872723 is about 934.1964461504. The cubic root of 872723 is about 95.5635205087.

The spelling of 872723 in words is "eight hundred seventy-two thousand, seven hundred twenty-three".