66632153 has 16 divisors (see below), whose sum is σ = 78534144. Its totient is φ = 55339200.

The previous prime is 66632147. The next prime is 66632171. The reversal of 66632153 is 35123666.

It is not a de Polignac number, because 66632153 - 2²⁰ = 65583577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66632143) 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 in 15 ways as a sum of consecutive naturals, for example, 94703 + ... + 95403.

It is an arithmetic number, because the mean of its divisors is an integer number (4908384).

Almost surely, 2^66632153 is an apocalyptic number.

It is an amenable number.

66632153 is a deficient number, since it is larger than the sum of its proper divisors (11901991).

66632153 is a wasteful number, since it uses less digits than its factorization.

66632153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its digits is 19440, while the sum is 32.

The square root of 66632153 is about 8162.8520138491. The cubic root of 66632153 is about 405.4101479289.

The spelling of 66632153 in words is "sixty-six million, six hundred thirty-two thousand, one hundred fifty-three".