64326523 has 4 divisors (see below), whose sum is σ = 64445968. Its totient is φ = 64207080.

The previous prime is 64326517. The next prime is 64326527. The reversal of 64326523 is 32562346.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64326523 - 2⁵ = 64326491 is a prime.

It is a super-2 number, since 2×64326523² = 8275803122539058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64326527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58911 + ... + 59992.

It is an arithmetic number, because the mean of its divisors is an integer number (16111492).

Almost surely, 2^64326523 is an apocalyptic number.

64326523 is a deficient number, since it is larger than the sum of its proper divisors (119445).

64326523 is a wasteful number, since it uses less digits than its factorization.

64326523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119444.

The product of its digits is 25920, while the sum is 31.

The square root of 64326523 is about 8020.3817240827. The cubic root of 64326523 is about 400.6791026465.

Adding to 64326523 its reverse (32562346), we get a palindrome (96888869).

The spelling of 64326523 in words is "sixty-four million, three hundred twenty-six thousand, five hundred twenty-three".