64066523 has 8 divisors (see below), whose sum is σ = 70784928. Its totient is φ = 57675904.

The previous prime is 64066487. The next prime is 64066549. The reversal of 64066523 is 32566046.

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

It is not a de Polignac number, because 64066523 - 2⁶ = 64066459 is a prime.

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 64066523.

It is not an unprimeable number, because it can be changed into a prime (64060523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81536 + ... + 82317.

It is an arithmetic number, because the mean of its divisors is an integer number (8848116).

Almost surely, 2^64066523 is an apocalyptic number.

64066523 is a deficient number, since it is larger than the sum of its proper divisors (6718405).

64066523 is a wasteful number, since it uses less digits than its factorization.

64066523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163893.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 64066523 is about 8004.1566076633. The cubic root of 64066523 is about 400.1385415934.

The spelling of 64066523 in words is "sixty-four million, sixty-six thousand, five hundred twenty-three".