6869981 has 8 divisors (see below), whose sum is σ = 7074144. Its totient is φ = 6667920.

The previous prime is 6869977. The next prime is 6869987. The reversal of 6869981 is 1899686.

6869981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6869981 - 2² = 6869977 is a prime.

It is a super-2 number, since 2×6869981² = 94393277880722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6869987) 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, 8066 + ... + 8876.

It is an arithmetic number, because the mean of its divisors is an integer number (884268).

Almost surely, 2^6869981 is an apocalyptic number.

It is an amenable number.

6869981 is a deficient number, since it is larger than the sum of its proper divisors (204163).

6869981 is a wasteful number, since it uses less digits than its factorization.

6869981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051.

The product of its digits is 186624, while the sum is 47.

The square root of 6869981 is about 2621.0648599377. The cubic root of 6869981 is about 190.1013402138.

The spelling of 6869981 in words is "six million, eight hundred sixty-nine thousand, nine hundred eighty-one".