66459745 has 16 divisors (see below), whose sum is σ = 87171840. Its totient is φ = 48240000.

The previous prime is 66459727. The next prime is 66459751. The reversal of 66459745 is 54795466.

66459745 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 66459745 - 2⁵ = 66459713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66459695 and 66459704.

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, 40501 + ... + 42109.

It is an arithmetic number, because the mean of its divisors is an integer number (5448240).

Almost surely, 2^66459745 is an apocalyptic number.

It is an amenable number.

66459745 is a deficient number, since it is larger than the sum of its proper divisors (20712095).

66459745 is a wasteful number, since it uses less digits than its factorization.

66459745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376.

The product of its digits is 907200, while the sum is 46.

The square root of 66459745 is about 8152.2846491030. The cubic root of 66459745 is about 405.0601851318.

The spelling of 66459745 in words is "sixty-six million, four hundred fifty-nine thousand, seven hundred forty-five".