6206639 has 4 divisors (see below), whose sum is σ = 6374424. Its totient is φ = 6038856.

The previous prime is 6206579. The next prime is 6206653. The reversal of 6206639 is 9366026.

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 6206639 - 2⁸ = 6206383 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 (6206839) 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, 83837 + ... + 83910.

It is an arithmetic number, because the mean of its divisors is an integer number (1593606).

Almost surely, 2^6206639 is an apocalyptic number.

6206639 is a deficient number, since it is larger than the sum of its proper divisors (167785).

6206639 is a wasteful number, since it uses less digits than its factorization.

6206639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167784.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 6206639 is about 2491.3127061852. The cubic root of 6206639 is about 183.7746038907.

The spelling of 6206639 in words is "six million, two hundred six thousand, six hundred thirty-nine".