6994881 has 6 divisors (see below), whose sum is σ = 10103730. Its totient is φ = 4663248.

The previous prime is 6994873. The next prime is 6994891. The reversal of 6994881 is 1884996.

It can be written as a sum of positive squares in only one way, i.e., 6969600 + 25281 = 2640^2 + 159^2 .

It is not a de Polignac number, because 6994881 - 2³ = 6994873 is a prime.

It is a super-2 number, since 2×6994881² = 97856720408322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6994811) 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 5 ways as a sum of consecutive naturals, for example, 388596 + ... + 388613.

It is an arithmetic number, because the mean of its divisors is an integer number (1683955).

Almost surely, 2^6994881 is an apocalyptic number.

It is an amenable number.

6994881 is a deficient number, since it is larger than the sum of its proper divisors (3108849).

6994881 is a wasteful number, since it uses less digits than its factorization.

6994881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777215 (or 777212 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 6994881 is about 2644.7837340698. The cubic root of 6994881 is about 191.2464769311.

It can be divided in two parts, 6994 and 881, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 6994881 in words is "six million, nine hundred ninety-four thousand, eight hundred eighty-one".