6889933087 has 4 divisors (see below), whose sum is σ = 7036527456. Its totient is φ = 6743338720.

The previous prime is 6889933051. The next prime is 6889933123. The reversal of 6889933087 is 7803399886.

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

It is an interprime number because it is at equal distance from previous prime (6889933051) and next prime (6889933123).

It is a cyclic number.

It is not a de Polignac number, because 6889933087 - 2²³ = 6881544479 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 (6889934087) 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, 73297114 + ... + 73297207.

It is an arithmetic number, because the mean of its divisors is an integer number (1759131864).

Almost surely, 2^6889933087 is an apocalyptic number.

6889933087 is a deficient number, since it is larger than the sum of its proper divisors (146594369).

6889933087 is a wasteful number, since it uses less digits than its factorization.

6889933087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146594368.

The product of its (nonzero) digits is 15676416, while the sum is 61.

The square root of 6889933087 is about 83005.6208157014. The cubic root of 6889933087 is about 1902.8519577032.

The spelling of 6889933087 in words is "six billion, eight hundred eighty-nine million, nine hundred thirty-three thousand, eighty-seven".