872637 has 4 divisors (see below), whose sum is σ = 1163520. Its totient is φ = 581756.

The previous prime is 872623. The next prime is 872647. The reversal of 872637 is 736278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 872637 - 2⁴ = 872621 is a prime.

It is a super-2 number, since 2×872637² = 1522990667538, which contains 22 as substring.

It is a d-powerful number, because it can be written as 8 + 7⁴ + 6⁶ + 2 + 3³ + 7⁷ .

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 872598 and 872607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145437 + ... + 145442.

It is an arithmetic number, because the mean of its divisors is an integer number (290880).

2⁸⁷²⁶³⁷ is an apocalyptic number.

It is an amenable number.

872637 is a deficient number, since it is larger than the sum of its proper divisors (290883).

872637 is a wasteful number, since it uses less digits than its factorization.

872637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290882.

The product of its digits is 14112, while the sum is 33.

The square root of 872637 is about 934.1504161536. The cubic root of 872637 is about 95.5603813940.

The spelling of 872637 in words is "eight hundred seventy-two thousand, six hundred thirty-seven".