320007887 has 2 divisors, whose sum is σ = 320007888. Its totient is φ = 320007886.

The previous prime is 320007841. The next prime is 320007889. The reversal of 320007887 is 788700023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320007887 - 2¹² = 320003791 is a prime.

Together with 320007889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320007889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160003943 + 160003944.

It is an arithmetic number, because the mean of its divisors is an integer number (160003944).

Almost surely, 2^320007887 is an apocalyptic number.

320007887 is a deficient number, since it is larger than the sum of its proper divisors (1).

320007887 is an equidigital number, since it uses as much as digits as its factorization.

320007887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 320007887 is about 17888.7642669917. The cubic root of 320007887 is about 683.9959980330.

The spelling of 320007887 in words is "three hundred twenty million, seven thousand, eight hundred eighty-seven".