320894887 has 2 divisors, whose sum is σ = 320894888. Its totient is φ = 320894886.

The previous prime is 320894881. The next prime is 320894957. The reversal of 320894887 is 788498023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320894887 - 2³ = 320894879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320894887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320894881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160447443 + 160447444.

It is an arithmetic number, because the mean of its divisors is an integer number (160447444).

Almost surely, 2^320894887 is an apocalyptic number.

320894887 is a deficient number, since it is larger than the sum of its proper divisors (1).

320894887 is an equidigital number, since it uses as much as digits as its factorization.

320894887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 320894887 is about 17913.5392092127. The cubic root of 320894887 is about 684.6273832588.

The spelling of 320894887 in words is "three hundred twenty million, eight hundred ninety-four thousand, eight hundred eighty-seven".