6118639 has 4 divisors (see below), whose sum is σ = 6144480. Its totient is φ = 6092800.

The previous prime is 6118631. The next prime is 6118643. The reversal of 6118639 is 9368116.

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 6118639 - 2³ = 6118631 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 (6118631) 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, 12562 + ... + 13039.

It is an arithmetic number, because the mean of its divisors is an integer number (1536120).

Almost surely, 2^6118639 is an apocalyptic number.

6118639 is a deficient number, since it is larger than the sum of its proper divisors (25841).

6118639 is a wasteful number, since it uses less digits than its factorization.

6118639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25840.

The product of its digits is 7776, while the sum is 34.

The square root of 6118639 is about 2473.5882842543. The cubic root of 6118639 is about 182.9019252122.

The spelling of 6118639 in words is "six million, one hundred eighteen thousand, six hundred thirty-nine".