872705 has 8 divisors (see below), whose sum is σ = 1052352. Its totient is φ = 694768.

The previous prime is 872687. The next prime is 872731. The reversal of 872705 is 507278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 872705 - 2¹⁰ = 871681 is a prime.

It is a super-2 number, since 2×872705² = 1523228034050, which contains 22 as substring.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484 + ... + 1986.

It is an arithmetic number, because the mean of its divisors is an integer number (131544).

2⁸⁷²⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

872705 is a deficient number, since it is larger than the sum of its proper divisors (179647).

872705 is a wasteful number, since it uses less digits than its factorization.

872705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 872705 is about 934.1868121527. The cubic root of 872705 is about 95.5628635017.

The spelling of 872705 in words is "eight hundred seventy-two thousand, seven hundred five".