247263 has 4 divisors (see below), whose sum is σ = 329688. Its totient is φ = 164840.

The previous prime is 247259. The next prime is 247279. The reversal of 247263 is 362742.

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 247263 - 2² = 247259 is a prime.

It is a super-2 number, since 2×247263² = 122277982338, which contains 22 as substring.

It is a D-number.

247263 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41208 + ... + 41213.

It is an arithmetic number, because the mean of its divisors is an integer number (82422).

2²⁴⁷²⁶³ is an apocalyptic number.

247263 is a deficient number, since it is larger than the sum of its proper divisors (82425).

247263 is an equidigital number, since it uses as much as digits as its factorization.

247263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82424.

The product of its digits is 2016, while the sum is 24.

The square root of 247263 is about 497.2554675416. The cubic root of 247263 is about 62.7653148019.

The spelling of 247263 in words is "two hundred forty-seven thousand, two hundred sixty-three".