6887557 has 8 divisors (see below), whose sum is σ = 7565760. Its totient is φ = 6240960.

The previous prime is 6887527. The next prime is 6887599. The reversal of 6887557 is 7557886.

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 6887557 - 2⁷ = 6887429 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 (6887527) 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, 7444 + ... + 8317.

It is an arithmetic number, because the mean of its divisors is an integer number (945720).

Almost surely, 2^6887557 is an apocalyptic number.

It is an amenable number.

6887557 is a deficient number, since it is larger than the sum of its proper divisors (678203).

6887557 is a wasteful number, since it uses less digits than its factorization.

6887557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15803.

The product of its digits is 470400, while the sum is 46.

The square root of 6887557 is about 2624.4155539853. The cubic root of 6887557 is about 190.2633191106.

The spelling of 6887557 in words is "six million, eight hundred eighty-seven thousand, five hundred fifty-seven".