872656 has 10 divisors (see below), whose sum is σ = 1690802. Its totient is φ = 436320.

The previous prime is 872647. The next prime is 872657. The reversal of 872656 is 656278.

It can be written as a sum of positive squares in only one way, i.e., 512656 + 360000 = 716^2 + 600^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872657) by changing a digit.

872656 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27255 + ... + 27286.

2⁸⁷²⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

872656 is a deficient number, since it is larger than the sum of its proper divisors (818146).

872656 is a wasteful number, since it uses less digits than its factorization.

872656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54549 (or 54543 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 872656 is about 934.1605857667. The cubic root of 872656 is about 95.5610749371.

The spelling of 872656 in words is "eight hundred seventy-two thousand, six hundred fifty-six".