987863867 has 2 divisors, whose sum is σ = 987863868. Its totient is φ = 987863866.

The previous prime is 987863837. The next prime is 987863893. The reversal of 987863867 is 768368789.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 987863867 - 2²⁴ = 971086651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (987863837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493931933 + 493931934.

It is an arithmetic number, because the mean of its divisors is an integer number (493931934).

Almost surely, 2^987863867 is an apocalyptic number.

987863867 is a deficient number, since it is larger than the sum of its proper divisors (1).

987863867 is an equidigital number, since it uses as much as digits as its factorization.

987863867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 62.

The square root of 987863867 is about 31430.3017325638. The cubic root of 987863867 is about 995.9381460139.

The spelling of 987863867 in words is "nine hundred eighty-seven million, eight hundred sixty-three thousand, eight hundred sixty-seven".