7687986 has 8 divisors (see below), whose sum is σ = 15375984. Its totient is φ = 2562660.

The previous prime is 7687963. The next prime is 7687991. The reversal of 7687986 is 6897867.

It is a happy number.

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

7687986 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640660 + ... + 640671.

It is an arithmetic number, because the mean of its divisors is an integer number (1921998).

Almost surely, 2^7687986 is an apocalyptic number.

7687986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7687986 is a wasteful number, since it uses less digits than its factorization.

7687986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281336.

The product of its digits is 1016064, while the sum is 51.

The square root of 7687986 is about 2772.7217675057. The cubic root of 7687986 is about 197.3653282622.

The spelling of 7687986 in words is "seven million, six hundred eighty-seven thousand, nine hundred eighty-six".