852688987 has 2 divisors, whose sum is σ = 852688988. Its totient is φ = 852688986.

The previous prime is 852688957. The next prime is 852689003. The reversal of 852688987 is 789886258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 852688987 - 2¹⁵ = 852656219 is a prime.

It is not a weakly prime, because it can be changed into another prime (852688957) 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 as a sum of consecutive naturals, namely, 426344493 + 426344494.

It is an arithmetic number, because the mean of its divisors is an integer number (426344494).

Almost surely, 2^852688987 is an apocalyptic number.

852688987 is a deficient number, since it is larger than the sum of its proper divisors (1).

852688987 is an equidigital number, since it uses as much as digits as its factorization.

852688987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15482880, while the sum is 61.

The square root of 852688987 is about 29200.8388064453. The cubic root of 852688987 is about 948.2660845036.

The spelling of 852688987 in words is "eight hundred fifty-two million, six hundred eighty-eight thousand, nine hundred eighty-seven".