6981199 has 8 divisors (see below), whose sum is σ = 7331760. Its totient is φ = 6638016.

The previous prime is 6981181. The next prime is 6981211. The reversal of 6981199 is 9911896.

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 6981199 - 2¹³ = 6973007 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6981599) 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, 147 + ... + 3739.

It is an arithmetic number, because the mean of its divisors is an integer number (916470).

Almost surely, 2^6981199 is an apocalyptic number.

6981199 is a deficient number, since it is larger than the sum of its proper divisors (350561).

6981199 is a wasteful number, since it uses less digits than its factorization.

6981199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689.

The product of its digits is 34992, while the sum is 43.

The square root of 6981199 is about 2642.1958670772. The cubic root of 6981199 is about 191.1217027236.

The spelling of 6981199 in words is "six million, nine hundred eighty-one thousand, one hundred ninety-nine".