66732107 has 4 divisors (see below), whose sum is σ = 71865360. Its totient is φ = 61598856.

The previous prime is 66732101. The next prime is 66732121. The reversal of 66732107 is 70123766.

66732107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70123766 = 2 ⋅35061883.

It is a cyclic number.

It is not a de Polignac number, because 66732107 - 2¹⁰ = 66731083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66732101) 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 3 ways as a sum of consecutive naturals, for example, 2566607 + ... + 2566632.

It is an arithmetic number, because the mean of its divisors is an integer number (17966340).

Almost surely, 2^66732107 is an apocalyptic number.

66732107 is a deficient number, since it is larger than the sum of its proper divisors (5133253).

66732107 is a wasteful number, since it uses less digits than its factorization.

66732107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5133252.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 66732107 is about 8168.9722119738. The cubic root of 66732107 is about 405.6127634261.

The spelling of 66732107 in words is "sixty-six million, seven hundred thirty-two thousand, one hundred seven".