66305432 has 8 divisors (see below), whose sum is σ = 124322700. Its totient is φ = 33152712.

The previous prime is 66305431. The next prime is 66305467. The reversal of 66305432 is 23450366.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 66305395 and 66305404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66305431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4144082 + ... + 4144097.

Almost surely, 2^66305432 is an apocalyptic number.

It is an amenable number.

66305432 is a deficient number, since it is larger than the sum of its proper divisors (58017268).

66305432 is a wasteful number, since it uses less digits than its factorization.

66305432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8288185 (or 8288181 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 66305432 is about 8142.8147467568. The cubic root of 66305432 is about 404.7464388559.

Adding to 66305432 its reverse (23450366), we get a palindrome (89755798).

The spelling of 66305432 in words is "sixty-six million, three hundred five thousand, four hundred thirty-two".