6557087 has 8 divisors (see below), whose sum is σ = 6984432. Its totient is φ = 6134400.

The previous prime is 6557081. The next prime is 6557099. The reversal of 6557087 is 7807556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6557087 - 2⁸ = 6556831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6557087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6557081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2012 + ... + 4142.

It is an arithmetic number, because the mean of its divisors is an integer number (873054).

Almost surely, 2^6557087 is an apocalyptic number.

6557087 is a deficient number, since it is larger than the sum of its proper divisors (427345).

6557087 is a wasteful number, since it uses less digits than its factorization.

6557087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 6557087 is about 2560.6809641187. The cubic root of 6557087 is about 187.1703196273.

The spelling of 6557087 in words is "six million, five hundred fifty-seven thousand, eighty-seven".