247995 has 32 divisors (see below), whose sum is σ = 483840. Its totient is φ = 119520.

The previous prime is 247993. The next prime is 247997. The reversal of 247995 is 599742.

It is an interprime number because it is at equal distance from previous prime (247993) and next prime (247997).

It is not a de Polignac number, because 247995 - 2¹ = 247993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1402 + ... + 1568.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2²⁴⁷⁹⁹⁵ is an apocalyptic number.

247995 is a deficient number, since it is larger than the sum of its proper divisors (235845).

247995 is a wasteful number, since it uses less digits than its factorization.

247995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 186 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 247995 is about 497.9909637734. The cubic root of 247995 is about 62.8271908164.

The spelling of 247995 in words is "two hundred forty-seven thousand, nine hundred ninety-five".