6994687 has 8 divisors (see below), whose sum is σ = 8125472. Its totient is φ = 5896800.

The previous prime is 6994661. The next prime is 6994693. The reversal of 6994687 is 7864996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6994687 - 2¹⁵ = 6961919 is a prime.

It is a d-powerful number, because it can be written as 6² + 9⁶ + 9⁷ + 4³ + 6⁸ + 8³ + 7² .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6994687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6994607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7764 + ... + 8617.

It is an arithmetic number, because the mean of its divisors is an integer number (1015684).

Almost surely, 2^6994687 is an apocalyptic number.

6994687 is a deficient number, since it is larger than the sum of its proper divisors (1130785).

6994687 is a wasteful number, since it uses less digits than its factorization.

6994687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16449.

The product of its digits is 653184, while the sum is 49.

The square root of 6994687 is about 2644.7470578488. The cubic root of 6994687 is about 191.2447088687.

The spelling of 6994687 in words is "six million, nine hundred ninety-four thousand, six hundred eighty-seven".