6881669 has 8 divisors (see below), whose sum is σ = 7207872. Its totient is φ = 6557760.

The previous prime is 6881663. The next prime is 6881683. The reversal of 6881669 is 9661886.

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

It is not a de Polignac number, because 6881669 - 2⁴ = 6881653 is a prime.

It is a super-2 number, since 2×6881669² = 94714736451122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881663) 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, 9614 + ... + 10304.

It is an arithmetic number, because the mean of its divisors is an integer number (900984).

Almost surely, 2^6881669 is an apocalyptic number.

It is an amenable number.

6881669 is a deficient number, since it is larger than the sum of its proper divisors (326203).

6881669 is a wasteful number, since it uses less digits than its factorization.

6881669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147.

The product of its digits is 124416, while the sum is 44.

The square root of 6881669 is about 2623.2935405707. The cubic root of 6881669 is about 190.2090865380.

The spelling of 6881669 in words is "six million, eight hundred eighty-one thousand, six hundred sixty-nine".