6633881 has 4 divisors (see below), whose sum is σ = 6642432. Its totient is φ = 6625332.

The previous prime is 6633877. The next prime is 6633889. The reversal of 6633881 is 1883366.

It is a happy number.

6633881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1883366 = 2 ⋅941683.

It is a cyclic number.

It is not a de Polignac number, because 6633881 - 2² = 6633877 is a prime.

It is a super-2 number, since 2×6633881² = 88016754244322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6633889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2981 + ... + 4706.

It is an arithmetic number, because the mean of its divisors is an integer number (1660608).

Almost surely, 2^6633881 is an apocalyptic number.

It is an amenable number.

6633881 is a deficient number, since it is larger than the sum of its proper divisors (8551).

6633881 is an equidigital number, since it uses as much as digits as its factorization.

6633881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8550.

The product of its digits is 20736, while the sum is 35.

The square root of 6633881 is about 2575.6321554135. The cubic root of 6633881 is about 187.8981736944.

The spelling of 6633881 in words is "six million, six hundred thirty-three thousand, eight hundred eighty-one".