66476545 has 16 divisors (see below), whose sum is σ = 84734208. Its totient is φ = 49893120.

The previous prime is 66476537. The next prime is 66476567. The reversal of 66476545 is 54567466.

It is a happy number.

66476545 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 66476545 - 2³ = 66476537 is a prime.

It is a Duffinian number.

Its product of digits (604800) is a multiple of the sum of its prime divisors (2520).

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, 30130 + ... + 32260.

It is an arithmetic number, because the mean of its divisors is an integer number (5295888).

Almost surely, 2^66476545 is an apocalyptic number.

It is an amenable number.

66476545 is a deficient number, since it is larger than the sum of its proper divisors (18257663).

66476545 is a wasteful number, since it uses less digits than its factorization.

66476545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520.

The product of its digits is 604800, while the sum is 43.

The square root of 66476545 is about 8153.3149699984. The cubic root of 66476545 is about 405.0943132485.

The spelling of 66476545 in words is "sixty-six million, four hundred seventy-six thousand, five hundred forty-five".