247885 has 8 divisors (see below), whose sum is σ = 324576. Its totient is φ = 180240.

The previous prime is 247879. The next prime is 247889. The reversal of 247885 is 588742.

247885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 247885 - 2⁵ = 247853 is a prime.

It is a super-2 number, since 2×247885² = 122893946450, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 247885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2199 + ... + 2308.

It is an arithmetic number, because the mean of its divisors is an integer number (40572).

2²⁴⁷⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

247885 is a deficient number, since it is larger than the sum of its proper divisors (76691).

247885 is a wasteful number, since it uses less digits than its factorization.

247885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523.

The product of its digits is 17920, while the sum is 34.

The square root of 247885 is about 497.8805077526. The cubic root of 247885 is about 62.8179002890.

The spelling of 247885 in words is "two hundred forty-seven thousand, eight hundred eighty-five".