6538655 has 4 divisors (see below), whose sum is σ = 7846392. Its totient is φ = 5230920.

The previous prime is 6538621. The next prime is 6538669. The reversal of 6538655 is 5568356.

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

It is not a de Polignac number, because 6538655 - 2¹² = 6534559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653861 + ... + 653870.

It is an arithmetic number, because the mean of its divisors is an integer number (1961598).

Almost surely, 2^6538655 is an apocalyptic number.

6538655 is a deficient number, since it is larger than the sum of its proper divisors (1307737).

6538655 is a wasteful number, since it uses less digits than its factorization.

6538655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307736.

The product of its digits is 108000, while the sum is 38.

The square root of 6538655 is about 2557.0793886776. The cubic root of 6538655 is about 186.9947761798.

Subtracting from 6538655 its reverse (5568356), we obtain a cube (970299 = 99³).

The spelling of 6538655 in words is "six million, five hundred thirty-eight thousand, six hundred fifty-five".