851289064 has 32 divisors (see below), whose sum is σ = 1667329920. Its totient is φ = 406707136.

The previous prime is 851289037. The next prime is 851289071. The reversal of 851289064 is 460982158.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 851289064.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 233157 + ... + 236779.

It is an arithmetic number, because the mean of its divisors is an integer number (52104060).

Almost surely, 2^851289064 is an apocalyptic number.

It is an amenable number.

851289064 is a deficient number, since it is larger than the sum of its proper divisors (816040856).

851289064 is a wasteful number, since it uses less digits than its factorization.

851289064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929 (or 4925 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 851289064 is about 29176.8583641214. The cubic root of 851289064 is about 947.7468539008.

The spelling of 851289064 in words is "eight hundred fifty-one million, two hundred eighty-nine thousand, sixty-four".