872666 has 16 divisors (see below), whose sum is σ = 1392768. Its totient is φ = 409200.

The previous prime is 872659. The next prime is 872671. The reversal of 872666 is 666278.

872666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2651 + ... + 2961.

It is an arithmetic number, because the mean of its divisors is an integer number (87048).

2⁸⁷²⁶⁶⁶ is an apocalyptic number.

872666 is a deficient number, since it is larger than the sum of its proper divisors (520102).

872666 is a wasteful number, since it uses less digits than its factorization.

872666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its digits is 24192, while the sum is 35.

The square root of 872666 is about 934.1659381502. The cubic root of 872666 is about 95.5614399557.

The spelling of 872666 in words is "eight hundred seventy-two thousand, six hundred sixty-six".