7686636 has 24 divisors (see below), whose sum is σ = 18514944. Its totient is φ = 2479440.

The previous prime is 7686631. The next prime is 7686649. The reversal of 7686636 is 6366867.

It is not an unprimeable number, because it can be changed into a prime (7686631) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9960 + ... + 10703.

It is an arithmetic number, because the mean of its divisors is an integer number (771456).

Almost surely, 2^7686636 is an apocalyptic number.

It is an amenable number.

7686636 is an abundant number, since it is smaller than the sum of its proper divisors (10828308).

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

7686636 is a wasteful number, since it uses less digits than its factorization.

7686636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20701 (or 20699 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 7686636 is about 2772.4783137114. The cubic root of 7686636 is about 197.3537752239.

The spelling of 7686636 in words is "seven million, six hundred eighty-six thousand, six hundred thirty-six".