247868 has 6 divisors (see below), whose sum is σ = 433776. Its totient is φ = 123932.

The previous prime is 247853. The next prime is 247873. The reversal of 247868 is 868742.

247868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247868² = 122877090848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30980 + ... + 30987.

It is an arithmetic number, because the mean of its divisors is an integer number (72296).

2²⁴⁷⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

247868 is a deficient number, since it is larger than the sum of its proper divisors (185908).

247868 is a wasteful number, since it uses less digits than its factorization.

247868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61971 (or 61969 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 247868 is about 497.8634350904. The cubic root of 247868 is about 62.8164642350.

The spelling of 247868 in words is "two hundred forty-seven thousand, eight hundred sixty-eight".