6013639 has 4 divisors (see below), whose sum is σ = 6068920. Its totient is φ = 5958360.

The previous prime is 6013627. The next prime is 6013691. The reversal of 6013639 is 9363106.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6013639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6013739) 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, 27477 + ... + 27694.

It is an arithmetic number, because the mean of its divisors is an integer number (1517230).

Almost surely, 2^6013639 is an apocalyptic number.

6013639 is a deficient number, since it is larger than the sum of its proper divisors (55281).

6013639 is a wasteful number, since it uses less digits than its factorization.

6013639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55280.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 6013639 is about 2452.2722116437. The cubic root of 6013639 is about 181.8496423514.

The spelling of 6013639 in words is "six million, thirteen thousand, six hundred thirty-nine".