66545152 has 20 divisors (see below), whose sum is σ = 132961356. Its totient is φ = 33272320.

The previous prime is 66545099. The next prime is 66545159. The reversal of 66545152 is 25154566.

66545152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66545159) 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 as a sum of consecutive naturals, namely, 64474 + ... + 65497.

Almost surely, 2^66545152 is an apocalyptic number.

It is an amenable number.

66545152 is a deficient number, since it is larger than the sum of its proper divisors (66416204).

66545152 is an equidigital number, since it uses as much as digits as its factorization.

66545152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129989 (or 129973 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 66545152 is about 8157.5211921269. The cubic root of 66545152 is about 405.2336242893.

The spelling of 66545152 in words is "sixty-six million, five hundred forty-five thousand, one hundred fifty-two".