6554639 has 32 divisors (see below), whose sum is σ = 9031680. Its totient is φ = 4603392.

The previous prime is 6554627. The next prime is 6554641. The reversal of 6554639 is 9364556.

It is a cyclic number.

It is not a de Polignac number, because 6554639 - 2⁴ = 6554623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6554689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29282 + ... + 29504.

It is an arithmetic number, because the mean of its divisors is an integer number (282240).

Almost surely, 2^6554639 is an apocalyptic number.

6554639 is a deficient number, since it is larger than the sum of its proper divisors (2477041).

6554639 is a wasteful number, since it uses less digits than its factorization.

6554639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279.

The product of its digits is 97200, while the sum is 38.

The square root of 6554639 is about 2560.2029216451. The cubic root of 6554639 is about 187.1470242231.

The spelling of 6554639 in words is "six million, five hundred fifty-four thousand, six hundred thirty-nine".