165988632 has 32 divisors (see below), whose sum is σ = 428359680. Its totient is φ = 53544480.

The previous prime is 165988597. The next prime is 165988639. The reversal of 165988632 is 236889561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165988639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110808 + ... + 112295.

It is an arithmetic number, because the mean of its divisors is an integer number (13386240).

Almost surely, 2^165988632 is an apocalyptic number.

165988632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165988632 is an abundant number, since it is smaller than the sum of its proper divisors (262371048).

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

165988632 is a wasteful number, since it uses less digits than its factorization.

165988632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223143 (or 223139 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 165988632 is about 12883.6575552131. The cubic root of 165988632 is about 549.5739201429.

The spelling of 165988632 in words is "one hundred sixty-five million, nine hundred eighty-eight thousand, six hundred thirty-two".