64529617 has 4 divisors (see below), whose sum is σ = 64683316. Its totient is φ = 64375920.

The previous prime is 64529599. The next prime is 64529629. The reversal of 64529617 is 71692546.

64529617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12559936 + 51969681 = 3544^2 + 7209^2 .

It is a cyclic number.

It is not a de Polignac number, because 64529617 - 2⁷ = 64529489 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 64529617.

It is not an unprimeable number, because it can be changed into a prime (64529687) 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 3 ways as a sum of consecutive naturals, for example, 76218 + ... + 77059.

It is an arithmetic number, because the mean of its divisors is an integer number (16170829).

Almost surely, 2^64529617 is an apocalyptic number.

It is an amenable number.

64529617 is a deficient number, since it is larger than the sum of its proper divisors (153699).

64529617 is a wasteful number, since it uses less digits than its factorization.

64529617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153698.

The product of its digits is 90720, while the sum is 40.

The square root of 64529617 is about 8033.0328643670. The cubic root of 64529617 is about 401.1003391091.

The spelling of 64529617 in words is "sixty-four million, five hundred twenty-nine thousand, six hundred seventeen".