6881491 has 8 divisors (see below), whose sum is σ = 7048944. Its totient is φ = 6716160.

The previous prime is 6881489. The next prime is 6881507. The reversal of 6881491 is 1941886.

It is a happy number.

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 6881491 - 2¹ = 6881489 is a prime.

It is a super-3 number, since 3×6881491³ (a number of 21 digits) contains 333 as substring.

It is a d-powerful number, because it can be written as 6⁴ + 8 + 8⁷ + 1 + 4³ + 9⁷ + 1 .

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 6881491.

It is not an unprimeable number, because it can be changed into a prime (6881461) 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, 7371 + ... + 8251.

It is an arithmetic number, because the mean of its divisors is an integer number (881118).

Almost surely, 2^6881491 is an apocalyptic number.

6881491 is a deficient number, since it is larger than the sum of its proper divisors (167453).

6881491 is a wasteful number, since it uses less digits than its factorization.

6881491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061.

The product of its digits is 13824, while the sum is 37.

The square root of 6881491 is about 2623.2596135343. The cubic root of 6881491 is about 190.2074465526.

The spelling of 6881491 in words is "six million, eight hundred eighty-one thousand, four hundred ninety-one".