6988018 has 4 divisors (see below), whose sum is σ = 10482030. Its totient is φ = 3494008.

The previous prime is 6987983. The next prime is 6988039. The reversal of 6988018 is 8108896.

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., 5602689 + 1385329 = 2367^2 + 1177^2 .

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, 1747003 + ... + 1747006.

Almost surely, 2^6988018 is an apocalyptic number.

6988018 is a deficient number, since it is larger than the sum of its proper divisors (3494012).

6988018 is a wasteful number, since it uses less digits than its factorization.

6988018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494011.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 6988018 is about 2643.4859560815. The cubic root of 6988018 is about 191.1839095544.

The spelling of 6988018 in words is "six million, nine hundred eighty-eight thousand, eighteen".