7868387 has 4 divisors (see below), whose sum is σ = 7875240. Its totient is φ = 7861536.

The previous prime is 7868381. The next prime is 7868423. The reversal of 7868387 is 7838687.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7868387 - 2⁸ = 7868131 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (7868381) 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 3 ways as a sum of consecutive naturals, for example, 1238 + ... + 4155.

It is an arithmetic number, because the mean of its divisors is an integer number (1968810).

Almost surely, 2^7868387 is an apocalyptic number.

7868387 is a deficient number, since it is larger than the sum of its proper divisors (6853).

7868387 is a wasteful number, since it uses less digits than its factorization.

7868387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6852.

The product of its digits is 451584, while the sum is 47.

The square root of 7868387 is about 2805.0645268870. The cubic root of 7868387 is about 198.8971548407.

The spelling of 7868387 in words is "seven million, eight hundred sixty-eight thousand, three hundred eighty-seven".