6981418 has 4 divisors (see below), whose sum is σ = 10472130. Its totient is φ = 3490708.

The previous prime is 6981409. The next prime is 6981421. The reversal of 6981418 is 8141896.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6487209 + 494209 = 2547^2 + 703^2 .

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1745353 + ... + 1745356.

Almost surely, 2^6981418 is an apocalyptic number.

6981418 is a deficient number, since it is larger than the sum of its proper divisors (3490712).

6981418 is a wasteful number, since it uses less digits than its factorization.

6981418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490711.

The product of its digits is 13824, while the sum is 37.

The square root of 6981418 is about 2642.2373095542. The cubic root of 6981418 is about 191.1237011967.

It can be divided in two parts, 698 and 1418, that added together give a square (2116 = 46²).

The spelling of 6981418 in words is "six million, nine hundred eighty-one thousand, four hundred eighteen".