247247 has 24 divisors (see below), whose sum is σ = 351360. Its totient is φ = 168480.

The previous prime is 247241. The next prime is 247249. The reversal of 247247 is 742742.

247247 is nontrivially palindromic in base 12.

It is not a de Polignac number, because 247247 - 2⁶ = 247183 is a prime.

It is a super-2 number, since 2×247247² = 122262158018, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13004 + ... + 13022.

It is an arithmetic number, because the mean of its divisors is an integer number (14640).

2²⁴⁷²⁴⁷ is an apocalyptic number.

247247 is a deficient number, since it is larger than the sum of its proper divisors (104113).

247247 is a wasteful number, since it uses less digits than its factorization.

247247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 50 counting only the distinct ones).

The product of its digits is 3136, while the sum is 26.

The square root of 247247 is about 497.2393789715. The cubic root of 247247 is about 62.7639609577.

Adding to 247247 its reverse (742742), we get a palindrome (989989).

It can be divided in two parts, 247 and 247, that added together give a palindrome (494).

The spelling of 247247 in words is "two hundred forty-seven thousand, two hundred forty-seven", and thus it is an iban number.