7868863 has 4 divisors (see below), whose sum is σ = 7892968. Its totient is φ = 7844760.

The previous prime is 7868851. The next prime is 7868897. The reversal of 7868863 is 3688687.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3688687 = 281 ⋅13127.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7868863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7868813) 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, 11556 + ... + 12217.

It is an arithmetic number, because the mean of its divisors is an integer number (1973242).

Almost surely, 2^7868863 is an apocalyptic number.

7868863 is a deficient number, since it is larger than the sum of its proper divisors (24105).

7868863 is a wasteful number, since it uses less digits than its factorization.

7868863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24104.

The product of its digits is 387072, while the sum is 46.

The square root of 7868863 is about 2805.1493721369. The cubic root of 7868863 is about 198.9011655372.

The spelling of 7868863 in words is "seven million, eight hundred sixty-eight thousand, eight hundred sixty-three".