247585 has 12 divisors (see below), whose sum is σ = 322812. Its totient is φ = 182208.

The previous prime is 247579. The next prime is 247591. The reversal of 247585 is 585742.

247585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (247579) and next prime (247591).

It can be written as a sum of positive squares in 6 ways, for example, as 8464 + 239121 = 92^2 + 489^2 .

It is not a de Polignac number, because 247585 - 2⁵ = 247553 is a prime.

It is a super-2 number, since 2×247585² = 122596664450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 699 + ... + 991.

It is an arithmetic number, because the mean of its divisors is an integer number (26901).

2²⁴⁷⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

247585 is a deficient number, since it is larger than the sum of its proper divisors (75227).

247585 is a wasteful number, since it uses less digits than its factorization.

247585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 311 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 247585 is about 497.5791394341. The cubic root of 247585 is about 62.7925485094.

The spelling of 247585 in words is "two hundred forty-seven thousand, five hundred eighty-five".