66433552 has 40 divisors (see below), whose sum is σ = 136839456. Its totient is φ = 31136256.

The previous prime is 66433547. The next prime is 66433559. The reversal of 66433552 is 25533466.

66433552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (66433559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126763 + ... + 127285.

Almost surely, 2^66433552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66433552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68419728).

66433552 is an abundant number, since it is smaller than the sum of its proper divisors (70405904).

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

66433552 is a wasteful number, since it uses less digits than its factorization.

66433552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015 (or 1009 counting only the distinct ones).

The product of its digits is 64800, while the sum is 34.

The square root of 66433552 is about 8150.6780086076. The cubic root of 66433552 is about 405.0069642658.

The spelling of 66433552 in words is "sixty-six million, four hundred thirty-three thousand, five hundred fifty-two".