247965 has 16 divisors (see below), whose sum is σ = 404736. Its totient is φ = 129600.

The previous prime is 247957. The next prime is 247991. The reversal of 247965 is 569742.

247965 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 247965 - 2³ = 247957 is a prime.

It is a super-2 number, since 2×247965² = 122973282450, which contains 22 as substring.

247965 is strictly pandigital in base 7.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 780 + ... + 1050.

It is an arithmetic number, because the mean of its divisors is an integer number (25296).

2²⁴⁷⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

247965 is a deficient number, since it is larger than the sum of its proper divisors (156771).

247965 is a wasteful number, since it uses less digits than its factorization.

247965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340.

The product of its digits is 15120, while the sum is 33.

The square root of 247965 is about 497.9608418340. The cubic root of 247965 is about 62.8246573087.

The spelling of 247965 in words is "two hundred forty-seven thousand, nine hundred sixty-five".