66132745 has 16 divisors (see below), whose sum is σ = 90862848. Its totient is φ = 45264960.

The previous prime is 66132739. The next prime is 66132763. The reversal of 66132745 is 54723166.

It is a happy number.

66132745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66132745 - 2⁷ = 66132617 is a prime.

It is a super-2 number, since 2×66132745² = 8747079922470050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66132745.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 22300 + ... + 25090.

It is an arithmetic number, because the mean of its divisors is an integer number (5678928).

Almost surely, 2^66132745 is an apocalyptic number.

It is an amenable number.

66132745 is a deficient number, since it is larger than the sum of its proper divisors (24730103).

66132745 is a wasteful number, since it uses less digits than its factorization.

66132745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480.

The product of its digits is 30240, while the sum is 34.

The square root of 66132745 is about 8132.2041907468. The cubic root of 66132745 is about 404.3947571901.

The spelling of 66132745 in words is "sixty-six million, one hundred thirty-two thousand, seven hundred forty-five".