6240539 has 4 divisors (see below), whose sum is σ = 6455760. Its totient is φ = 6025320.

The previous prime is 6240527. The next prime is 6240587. The reversal of 6240539 is 9350426.

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 6240539 - 2⁴ = 6240523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 215191 = 6240539 / (6 + 2 + 4 + 0 + 5 + 3 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6240589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107567 + ... + 107624.

It is an arithmetic number, because the mean of its divisors is an integer number (1613940).

Almost surely, 2^6240539 is an apocalyptic number.

6240539 is a deficient number, since it is larger than the sum of its proper divisors (215221).

6240539 is a wasteful number, since it uses less digits than its factorization.

6240539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215220.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 6240539 is about 2498.1070833733. The cubic root of 6240539 is about 184.1085823347.

The spelling of 6240539 in words is "six million, two hundred forty thousand, five hundred thirty-nine".