64533432 has 32 divisors (see below), whose sum is σ = 161531280. Its totient is φ = 21484800.

The previous prime is 64533407. The next prime is 64533451. The reversal of 64533432 is 23433546.

It is a self number, because there is not a number n which added to its sum of digits gives 64533432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34932 + ... + 36732.

Almost surely, 2^64533432 is an apocalyptic number.

It is an amenable number.

64533432 is an abundant number, since it is smaller than the sum of its proper divisors (96997848).

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

64533432 is a wasteful number, since it uses less digits than its factorization.

64533432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303 (or 3299 counting only the distinct ones).

The product of its digits is 25920, while the sum is 30.

The square root of 64533432 is about 8033.2703178718. The cubic root of 64533432 is about 401.1082433228.

Adding to 64533432 its reverse (23433546), we get a palindrome (87966978).

The spelling of 64533432 in words is "sixty-four million, five hundred thirty-three thousand, four hundred thirty-two".