6887642 has 8 divisors (see below), whose sum is σ = 10664832. Its totient is φ = 3332700.

The previous prime is 6887627. The next prime is 6887663. The reversal of 6887642 is 2467886.

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

It is a super-2 number, since 2×6887642² = 94879224640328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6887642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55484 + ... + 55607.

It is an arithmetic number, because the mean of its divisors is an integer number (1333104).

Almost surely, 2^6887642 is an apocalyptic number.

6887642 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6887642 is a deficient number, since it is larger than the sum of its proper divisors (3777190).

6887642 is a wasteful number, since it uses less digits than its factorization.

6887642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111124.

The product of its digits is 129024, while the sum is 41.

The square root of 6887642 is about 2624.4317480171. The cubic root of 6887642 is about 190.2641017933.

The spelling of 6887642 in words is "six million, eight hundred eighty-seven thousand, six hundred forty-two".