665543034 has 32 divisors (see below), whose sum is σ = 1592754240. Its totient is φ = 204782256.

The previous prime is 665543033. The next prime is 665543041. The reversal of 665543034 is 430345566.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 665543034.

It is not an unprimeable number, because it can be changed into a prime (665543033) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 473332 + ... + 474735.

It is an arithmetic number, because the mean of its divisors is an integer number (49773570).

Almost surely, 2^665543034 is an apocalyptic number.

665543034 is an abundant number, since it is smaller than the sum of its proper divisors (927211206).

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

665543034 is a wasteful number, since it uses less digits than its factorization.

665543034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948091 (or 948085 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The square root of 665543034 is about 25798.1207455117. The cubic root of 665543034 is about 873.0893969694.

The spelling of 665543034 in words is "six hundred sixty-five million, five hundred forty-three thousand, thirty-four".