6629881 has 8 divisors (see below), whose sum is σ = 7042464. Its totient is φ = 6219840.

The previous prime is 6629873. The next prime is 6629891. The reversal of 6629881 is 1889266.

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 6629881 - 2³ = 6629873 is a prime.

It is a super-2 number, since 2×6629881² = 87910644148322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6629891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9366 + ... + 10048.

It is an arithmetic number, because the mean of its divisors is an integer number (880308).

Almost surely, 2^6629881 is an apocalyptic number.

It is an amenable number.

6629881 is a deficient number, since it is larger than the sum of its proper divisors (412583).

6629881 is a wasteful number, since it uses less digits than its factorization.

6629881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271.

The product of its digits is 41472, while the sum is 40.

The square root of 6629881 is about 2574.8555299278. The cubic root of 6629881 is about 187.8604007424.

The spelling of 6629881 in words is "six million, six hundred twenty-nine thousand, eight hundred eighty-one".