6864073987 has 4 divisors (see below), whose sum is σ = 6864364000. Its totient is φ = 6863783976.

The previous prime is 6864073967. The next prime is 6864073991. The reversal of 6864073987 is 7893704686.

It is a happy number.

6864073987 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 cyclic number.

It is not a de Polignac number, because 6864073987 - 2⁷ = 6864073859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6864073967) 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, 106008 + ... + 158005.

It is an arithmetic number, because the mean of its divisors is an integer number (1716091000).

Almost surely, 2^6864073987 is an apocalyptic number.

6864073987 is a deficient number, since it is larger than the sum of its proper divisors (290013).

6864073987 is a wasteful number, since it uses less digits than its factorization.

6864073987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290012.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The square root of 6864073987 is about 82849.7072233813. The cubic root of 6864073987 is about 1900.4683967076.

The spelling of 6864073987 in words is "six billion, eight hundred sixty-four million, seventy-three thousand, nine hundred eighty-seven".