64566545 has 8 divisors (see below), whose sum is σ = 77870400. Its totient is φ = 51392880.

The previous prime is 64566539. The next prime is 64566547. The reversal of 64566545 is 54566546.

64566545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-64566545 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64566547) 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 7 ways as a sum of consecutive naturals, for example, 31451 + ... + 33440.

It is an arithmetic number, because the mean of its divisors is an integer number (9733800).

Almost surely, 2^64566545 is an apocalyptic number.

It is an amenable number.

64566545 is a deficient number, since it is larger than the sum of its proper divisors (13303855).

64566545 is a wasteful number, since it uses less digits than its factorization.

64566545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65095.

The product of its digits is 432000, while the sum is 41.

The square root of 64566545 is about 8035.3310448295. The cubic root of 64566545 is about 401.1768363284.

Subtracting from 64566545 its reverse (54566546), we obtain a palindrome (9999999).

The spelling of 64566545 in words is "sixty-four million, five hundred sixty-six thousand, five hundred forty-five".