247563 has 16 divisors (see below), whose sum is σ = 375840. Its totient is φ = 160992.

The previous prime is 247553. The next prime is 247579. The reversal of 247563 is 365742.

It is a happy number.

It is not a de Polignac number, because 247563 - 2⁴ = 247547 is a prime.

It is a super-2 number, since 2×247563² = 122574877938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (247553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1345 + ... + 1517.

It is an arithmetic number, because the mean of its divisors is an integer number (23490).

2²⁴⁷⁵⁶³ is an apocalyptic number.

247563 is a deficient number, since it is larger than the sum of its proper divisors (128277).

247563 is a wasteful number, since it uses less digits than its factorization.

247563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 229 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 247563 is about 497.5570319069. The cubic root of 247563 is about 62.7906885731.

The spelling of 247563 in words is "two hundred forty-seven thousand, five hundred sixty-three".