64528911 has 12 divisors (see below), whose sum is σ = 94737240. Its totient is φ = 42313680.

The previous prime is 64528901. The next prime is 64528927. The reversal of 64528911 is 11982546.

64528911 is a `hidden beast` number, since 645 + 2 + 8 + 9 + 1 + 1 = 666.

64528911 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 64528911 - 2⁵ = 64528879 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64528901) 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 11 ways as a sum of consecutive naturals, for example, 58221 + ... + 59318.

It is an arithmetic number, because the mean of its divisors is an integer number (7894770).

Almost surely, 2^64528911 is an apocalyptic number.

64528911 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

64528911 is a deficient number, since it is larger than the sum of its proper divisors (30208329).

64528911 is a wasteful number, since it uses less digits than its factorization.

64528911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117606 (or 117603 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 64528911 is about 8032.9889206945. The cubic root of 64528911 is about 401.0988763293.

The spelling of 64528911 in words is "sixty-four million, five hundred twenty-eight thousand, nine hundred eleven".