66454465 has 32 divisors (see below), whose sum is σ = 100465920. Its totient is φ = 40992000.

The previous prime is 66454463. The next prime is 66454471. The reversal of 66454465 is 56445466.

66454465 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 66454465 - 2¹ = 66454463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66454463) 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 31 ways as a sum of consecutive naturals, for example, 38031 + ... + 39739.

It is an arithmetic number, because the mean of its divisors is an integer number (3139560).

Almost surely, 2^66454465 is an apocalyptic number.

It is an amenable number.

66454465 is a deficient number, since it is larger than the sum of its proper divisors (34011455).

66454465 is a wasteful number, since it uses less digits than its factorization.

66454465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833.

The product of its digits is 345600, while the sum is 40.

The square root of 66454465 is about 8151.9608070697. The cubic root of 66454465 is about 405.0494579645.

The spelling of 66454465 in words is "sixty-six million, four hundred fifty-four thousand, four hundred sixty-five".