64520326 has 16 divisors (see below), whose sum is σ = 105303744. Its totient is φ = 29470464.

The previous prime is 64520317. The next prime is 64520353. The reversal of 64520326 is 62302546.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64520294 and 64520303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10270 + ... + 15313.

It is an arithmetic number, because the mean of its divisors is an integer number (6581484).

Almost surely, 2^64520326 is an apocalyptic number.

64520326 is a deficient number, since it is larger than the sum of its proper divisors (40783418).

64520326 is a wasteful number, since it uses less digits than its factorization.

64520326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25695.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 64520326 is about 8032.4545439112. The cubic root of 64520326 is about 401.0810879896.

It can be divided in two parts, 64520 and 326, that added together give a palindrome (64846).

The spelling of 64520326 in words is "sixty-four million, five hundred twenty thousand, three hundred twenty-six".