132643665 has 48 divisors (see below), whose sum is σ = 286655616. Its totient is φ = 55123200.

The previous prime is 132643613. The next prime is 132643723. The reversal of 132643665 is 566346231.

132643665 is a `hidden beast` number, since 1 + 3 + 2 + 643 + 6 + 6 + 5 = 666.

It is not a de Polignac number, because 132643665 - 2⁶ = 132643601 is a prime.

It is a super-3 number, since 3×132643665³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15676 + ... + 22605.

It is an arithmetic number, because the mean of its divisors is an integer number (5971992).

Almost surely, 2^132643665 is an apocalyptic number.

132643665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

132643665 is an abundant number, since it is smaller than the sum of its proper divisors (154011951).

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

132643665 is a wasteful number, since it uses less digits than its factorization.

132643665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38310 (or 38307 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 132643665 is about 11517.1031514005. The cubic root of 132643665 is about 509.9905995961.

Adding to 132643665 its reverse (566346231), we get a palindrome (698989896).

The spelling of 132643665 in words is "one hundred thirty-two million, six hundred forty-three thousand, six hundred sixty-five".