7868636 has 12 divisors (see below), whose sum is σ = 13804560. Its totient is φ = 3924480.

The previous prime is 7868633. The next prime is 7868647. The reversal of 7868636 is 6368687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7868633) 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, 485 + ... + 3996.

It is an arithmetic number, because the mean of its divisors is an integer number (1150380).

Almost surely, 2^7868636 is an apocalyptic number.

It is an amenable number.

7868636 is a deficient number, since it is larger than the sum of its proper divisors (5935924).

7868636 is a wasteful number, since it uses less digits than its factorization.

7868636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4924 (or 4922 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 7868636 is about 2805.1089105416. The cubic root of 7868636 is about 198.8992528933.

The spelling of 7868636 in words is "seven million, eight hundred sixty-eight thousand, six hundred thirty-six".