6981394 has 16 divisors (see below), whose sum is σ = 12247488. Its totient is φ = 2922192.

The previous prime is 6981391. The next prime is 6981409. The reversal of 6981394 is 4931896.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6981391) 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, 5197 + ... + 6400.

It is an arithmetic number, because the mean of its divisors is an integer number (765468).

Almost surely, 2^6981394 is an apocalyptic number.

6981394 is a deficient number, since it is larger than the sum of its proper divisors (5266094).

6981394 is a wasteful number, since it uses less digits than its factorization.

6981394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11649.

The product of its digits is 46656, while the sum is 40.

The square root of 6981394 is about 2642.2327679446. The cubic root of 6981394 is about 191.1234821880.

The spelling of 6981394 in words is "six million, nine hundred eighty-one thousand, three hundred ninety-four".