665832834 has 24 divisors (see below), whose sum is σ = 1481629500. Its totient is φ = 215945568.

The previous prime is 665832821. The next prime is 665832847. The reversal of 665832834 is 438238566.

It is a happy number.

665832834 is a `hidden beast` number, since 66 + 583 + 2 + 8 + 3 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (665832821) and next prime (665832847).

It can be written as a sum of positive squares in 2 ways, for example, as 665794809 + 38025 = 25803^2 + 195^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 665832834.

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 11 ways as a sum of consecutive naturals, for example, 499209 + ... + 500540.

Almost surely, 2^665832834 is an apocalyptic number.

665832834 is an abundant number, since it is smaller than the sum of its proper divisors (815796666).

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

665832834 is a wasteful number, since it uses less digits than its factorization.

665832834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999794 (or 999791 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 665832834 is about 25803.7368224062. The cubic root of 665832834 is about 873.2161028214.

It can be divided in two parts, 665832 and 834, that added together give a palindrome (666666).

The spelling of 665832834 in words is "six hundred sixty-five million, eight hundred thirty-two thousand, eight hundred thirty-four".