6894987 has 16 divisors (see below), whose sum is σ = 10301952. Its totient is φ = 4065120.

The previous prime is 6894983. The next prime is 6894991. The reversal of 6894987 is 7894986.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6894983) and next prime (6894991).

It is not a de Polignac number, because 6894987 - 2² = 6894983 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 8³ + 9² + 4⁶ + 9⁷ + 8⁷ + 7⁴ .

It is not an unprimeable number, because it can be changed into a prime (6894983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1603 + ... + 4044.

It is an arithmetic number, because the mean of its divisors is an integer number (643872).

Almost surely, 2^6894987 is an apocalyptic number.

6894987 is a deficient number, since it is larger than the sum of its proper divisors (3406965).

6894987 is a wasteful number, since it uses less digits than its factorization.

6894987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698.

The product of its digits is 870912, while the sum is 51.

The square root of 6894987 is about 2625.8307256943. The cubic root of 6894987 is about 190.3317104834.

Subtracting 6894987 from its reverse (7894986), we obtain a palindrome (999999).

The spelling of 6894987 in words is "six million, eight hundred ninety-four thousand, nine hundred eighty-seven".