850780385 has 96 divisors (see below), whose sum is σ = 1427207040. Its totient is φ = 479582208.

The previous prime is 850780379. The next prime is 850780391. The reversal of 850780385 is 583087058.

850780385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (850780379) and next prime (850780391).

It is not a de Polignac number, because 850780385 - 2⁶ = 850780321 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1028342 + ... + 1029168.

It is an arithmetic number, because the mean of its divisors is an integer number (14866740).

Almost surely, 2^850780385 is an apocalyptic number.

850780385 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

850780385 is a deficient number, since it is larger than the sum of its proper divisors (576426655).

850780385 is a wasteful number, since it uses less digits than its factorization.

850780385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 44.

The square root of 850780385 is about 29168.1398961264. The cubic root of 850780385 is about 947.5580441696.

The spelling of 850780385 in words is "eight hundred fifty million, seven hundred eighty thousand, three hundred eighty-five".