247065 has 32 divisors (see below), whose sum is σ = 489216. Its totient is φ = 103680.

The previous prime is 247031. The next prime is 247067. The reversal of 247065 is 560742.

247065 = 1² + 2² + ... + 90².

It is a happy number.

247065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 247065 - 2⁶ = 247001 is a prime.

It is a super-2 number, since 2×247065² = 122082228450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1275 + ... + 1455.

It is an arithmetic number, because the mean of its divisors is an integer number (15288).

2²⁴⁷⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

247065 is a deficient number, since it is larger than the sum of its proper divisors (242151).

247065 is a wasteful number, since it uses less digits than its factorization.

247065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 247065 is about 497.0563348354. The cubic root of 247065 is about 62.7485568680.

The spelling of 247065 in words is "two hundred forty-seven thousand, sixty-five".