665534862 has 48 divisors (see below), whose sum is σ = 1496935440. Its totient is φ = 213446016.

The previous prime is 665534861. The next prime is 665534867. The reversal of 665534862 is 268435566.

665534862 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665534861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158178 + ... + 162330.

It is an arithmetic number, because the mean of its divisors is an integer number (31186155).

Almost surely, 2^665534862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 665534862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748467720).

665534862 is an abundant number, since it is smaller than the sum of its proper divisors (831400578).

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

665534862 is a wasteful number, since it uses less digits than its factorization.

665534862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497 (or 4494 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The square root of 665534862 is about 25797.9623613959. The cubic root of 665534862 is about 873.0858234886.

The spelling of 665534862 in words is "six hundred sixty-five million, five hundred thirty-four thousand, eight hundred sixty-two".