247967 has 4 divisors (see below), whose sum is σ = 251736. Its totient is φ = 244200.

The previous prime is 247957. The next prime is 247991. The reversal of 247967 is 769742.

247967 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 247967 - 2⁸ = 247711 is a prime.

It is a super-2 number, since 2×247967² = 122975266178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247957) 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 3 ways as a sum of consecutive naturals, for example, 1784 + ... + 1917.

It is an arithmetic number, because the mean of its divisors is an integer number (62934).

2²⁴⁷⁹⁶⁷ is an apocalyptic number.

247967 is a deficient number, since it is larger than the sum of its proper divisors (3769).

247967 is an equidigital number, since it uses as much as digits as its factorization.

247967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768.

The product of its digits is 21168, while the sum is 35.

The square root of 247967 is about 497.9628500200. The cubic root of 247967 is about 62.8248262156.

The spelling of 247967 in words is "two hundred forty-seven thousand, nine hundred sixty-seven".