871665354 has 128 divisors (see below), whose sum is σ = 2311372800. Its totient is φ = 238230720.

The previous prime is 871665343. The next prime is 871665373. The reversal of 871665354 is 453566178.

It is a Curzon number.

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 63 ways as a sum of consecutive naturals, for example, 1435719 + ... + 1436325.

It is an arithmetic number, because the mean of its divisors is an integer number (18057600).

Almost surely, 2^871665354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871665354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1155686400).

871665354 is an abundant number, since it is smaller than the sum of its proper divisors (1439707446).

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

871665354 is a wasteful number, since it uses less digits than its factorization.

871665354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785 (or 779 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 871665354 is about 29523.9793049650. The cubic root of 871665354 is about 955.2490068225.

The spelling of 871665354 in words is "eight hundred seventy-one million, six hundred sixty-five thousand, three hundred fifty-four".