872566 has 4 divisors (see below), whose sum is σ = 1308852. Its totient is φ = 436282.

The previous prime is 872563. The next prime is 872567. The reversal of 872566 is 665278.

872566 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 super-2 number, since 2×872566² = 1522742848712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218140 + ... + 218143.

It is an arithmetic number, because the mean of its divisors is an integer number (327213).

2⁸⁷²⁵⁶⁶ is an apocalyptic number.

872566 is a deficient number, since it is larger than the sum of its proper divisors (436286).

872566 is a wasteful number, since it uses less digits than its factorization.

872566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436285.

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

The square root of 872566 is about 934.1124129354. The cubic root of 872566 is about 95.5577896439.

The spelling of 872566 in words is "eight hundred seventy-two thousand, five hundred sixty-six".