64524905 has 8 divisors (see below), whose sum is σ = 77473032. Its totient is φ = 51591168.

The previous prime is 64524899. The next prime is 64524907. The reversal of 64524905 is 50942546.

It is a happy number.

64524905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11881 + 64513024 = 109^2 + 8032^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 64524905 - 2⁶ = 64524841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64524907) 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, 15419 + ... + 19151.

It is an arithmetic number, because the mean of its divisors is an integer number (9684129).

Almost surely, 2^64524905 is an apocalyptic number.

It is an amenable number.

64524905 is a deficient number, since it is larger than the sum of its proper divisors (12948127).

64524905 is a wasteful number, since it uses less digits than its factorization.

64524905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 64524905 is about 8032.7395700346. The cubic root of 64524905 is about 401.0905759911.

The spelling of 64524905 in words is "sixty-four million, five hundred twenty-four thousand, nine hundred five".