845289864 has 64 divisors (see below), whose sum is σ = 2411510400. Its totient is φ = 274145472.

The previous prime is 845289857. The next prime is 845289881. The reversal of 845289864 is 468982548.

It is a super-2 number, since 2×845289864² = 1429029908362276992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 845289864.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44892 + ... + 60875.

It is an arithmetic number, because the mean of its divisors is an integer number (37679850).

Almost surely, 2^845289864 is an apocalyptic number.

It is an amenable number.

845289864 is an abundant number, since it is smaller than the sum of its proper divisors (1566220536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

845289864 is a wasteful number, since it uses less digits than its factorization.

845289864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105819 (or 105809 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The square root of 845289864 is about 29073.8690923654. The cubic root of 845289864 is about 945.5152846109.

The spelling of 845289864 in words is "eight hundred forty-five million, two hundred eighty-nine thousand, eight hundred sixty-four".