7868667 has 4 divisors (see below), whose sum is σ = 10491560. Its totient is φ = 5245776.

The previous prime is 7868647. The next prime is 7868677. The reversal of 7868667 is 7668687.

7868667 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-7868667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7868617) 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, 1311442 + ... + 1311447.

It is an arithmetic number, because the mean of its divisors is an integer number (2622890).

Almost surely, 2^7868667 is an apocalyptic number.

7868667 is a deficient number, since it is larger than the sum of its proper divisors (2622893).

7868667 is a wasteful number, since it uses less digits than its factorization.

7868667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622892.

The product of its digits is 677376, while the sum is 48.

The square root of 7868667 is about 2805.1144361683. The cubic root of 7868667 is about 198.8995140936.

It can be divided in two parts, 786 and 8667, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 7868667 in words is "seven million, eight hundred sixty-eight thousand, six hundred sixty-seven".