6539247 has 24 divisors (see below), whose sum is σ = 11099088. Its totient is φ = 3657600.

The previous prime is 6539243. The next prime is 6539263. The reversal of 6539247 is 7429356.

It is not a de Polignac number, because 6539247 - 2² = 6539243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539243) 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, 1254 + ... + 3827.

It is an arithmetic number, because the mean of its divisors is an integer number (462462).

Almost surely, 2^6539247 is an apocalyptic number.

6539247 is a deficient number, since it is larger than the sum of its proper divisors (4559841).

6539247 is a wasteful number, since it uses less digits than its factorization.

6539247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111 (or 5108 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 6539247 is about 2557.1951431207. The cubic root of 6539247 is about 187.0004194182. Note that the first 3 decimals are identical.

It can be divided in two parts, 6539 and 247, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 6539247 in words is "six million, five hundred thirty-nine thousand, two hundred forty-seven".