64164505 has 4 divisors (see below), whose sum is σ = 76997412. Its totient is φ = 51331600.

The previous prime is 64164491. The next prime is 64164509. The reversal of 64164505 is 50546146.

64164505 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 25563136 + 38601369 = 5056^2 + 6213^2 .

It is not a de Polignac number, because 64164505 - 2⁵ = 64164473 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64164509) 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, 6416446 + ... + 6416455.

It is an arithmetic number, because the mean of its divisors is an integer number (19249353).

Almost surely, 2^64164505 is an apocalyptic number.

It is an amenable number.

64164505 is a deficient number, since it is larger than the sum of its proper divisors (12832907).

64164505 is a wasteful number, since it uses less digits than its factorization.

64164505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12832906.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 64164505 is about 8010.2749640696. The cubic root of 64164505 is about 400.3424255282.

The spelling of 64164505 in words is "sixty-four million, one hundred sixty-four thousand, five hundred five".