6982987 has 4 divisors (see below), whose sum is σ = 7617816. Its totient is φ = 6348160.

The previous prime is 6982981. The next prime is 6982999. The reversal of 6982987 is 7892896.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6982987 - 2³ = 6982979 is a prime.

It is a Duffinian number.

6982987 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6982987.

It is not an unprimeable number, because it can be changed into a prime (6982981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317398 + ... + 317419.

It is an arithmetic number, because the mean of its divisors is an integer number (1904454).

Almost surely, 2^6982987 is an apocalyptic number.

6982987 is a deficient number, since it is larger than the sum of its proper divisors (634829).

6982987 is a wasteful number, since it uses less digits than its factorization.

6982987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634828.

The product of its digits is 435456, while the sum is 49.

The square root of 6982987 is about 2642.5342003463. The cubic root of 6982987 is about 191.1380178024.

Subtracting 6982987 from its reverse (7892896), we obtain a palindrome (909909).

The spelling of 6982987 in words is "six million, nine hundred eighty-two thousand, nine hundred eighty-seven".