873665870 has 128 divisors (see below), whose sum is σ = 2143936512. Its totient is φ = 247910400.

The previous prime is 873665869. The next prime is 873665899. The reversal of 873665870 is 78566378.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 404714 + ... + 406866.

It is an arithmetic number, because the mean of its divisors is an integer number (16749504).

Almost surely, 2^873665870 is an apocalyptic number.

873665870 is an abundant number, since it is smaller than the sum of its proper divisors (1270270642).

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

873665870 is a wasteful number, since it uses less digits than its factorization.

873665870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The square root of 873665870 is about 29557.8394000644. The cubic root of 873665870 is about 955.9792300419.

The spelling of 873665870 in words is "eight hundred seventy-three million, six hundred sixty-five thousand, eight hundred seventy".