64543332 has 24 divisors (see below), whose sum is σ = 172115776. Its totient is φ = 18440928.

The previous prime is 64543327. The next prime is 64543337. The reversal of 64543332 is 23334546.

It is an interprime number because it is at equal distance from previous prime (64543327) and next prime (64543337).

It is a self number, because there is not a number n which added to its sum of digits gives 64543332.

It is not an unprimeable number, because it can be changed into a prime (64543337) 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, 384103 + ... + 384270.

Almost surely, 2^64543332 is an apocalyptic number.

It is an amenable number.

64543332 is an abundant number, since it is smaller than the sum of its proper divisors (107572444).

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

64543332 is a wasteful number, since it uses less digits than its factorization.

64543332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768387 (or 768385 counting only the distinct ones).

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

The square root of 64543332 is about 8033.8864816476. The cubic root of 64543332 is about 401.1287534596.

Adding to 64543332 its reverse (23334546), we get a palindrome (87877878).

The spelling of 64543332 in words is "sixty-four million, five hundred forty-three thousand, three hundred thirty-two".