845204087 has 48 divisors (see below), whose sum is σ = 1103921280. Its totient is φ = 640882368.

The previous prime is 845204083. The next prime is 845204099. The reversal of 845204087 is 780402548.

845204087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 845204087 - 2² = 845204083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 845204087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845204081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1615808 + ... + 1616330.

It is an arithmetic number, because the mean of its divisors is an integer number (22998360).

Almost surely, 2^845204087 is an apocalyptic number.

845204087 is a deficient number, since it is larger than the sum of its proper divisors (258717193).

845204087 is a wasteful number, since it uses less digits than its factorization.

845204087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 845204087 is about 29072.3938986799. The cubic root of 845204087 is about 945.4833010230.

The spelling of 845204087 in words is "eight hundred forty-five million, two hundred four thousand, eighty-seven".