64564141 has 4 divisors (see below), whose sum is σ = 64832284. Its totient is φ = 64296000.

The previous prime is 64564111. The next prime is 64564163. The reversal of 64564141 is 14146546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14146546 = 2 ⋅7073273.

It can be written as a sum of positive squares in 2 ways, for example, as 48930025 + 15634116 = 6995^2 + 3954^2 .

It is a cyclic number.

It is not a de Polignac number, because 64564141 - 2¹¹ = 64562093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64564111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133710 + ... + 134191.

It is an arithmetic number, because the mean of its divisors is an integer number (16208071).

Almost surely, 2^64564141 is an apocalyptic number.

It is an amenable number.

64564141 is a deficient number, since it is larger than the sum of its proper divisors (268143).

64564141 is a wasteful number, since it uses less digits than its factorization.

64564141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268142.

The product of its digits is 11520, while the sum is 31.

The square root of 64564141 is about 8035.1814540805. The cubic root of 64564141 is about 401.1718572737.

The spelling of 64564141 in words is "sixty-four million, five hundred sixty-four thousand, one hundred forty-one".