64818141 has 4 divisors (see below), whose sum is σ = 86424192. Its totient is φ = 43212092.

The previous prime is 64818121. The next prime is 64818181. The reversal of 64818141 is 14181846.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64818141 - 2⁹ = 64817629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64818121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10803021 + ... + 10803026.

It is an arithmetic number, because the mean of its divisors is an integer number (21606048).

Almost surely, 2^64818141 is an apocalyptic number.

It is an amenable number.

64818141 is a deficient number, since it is larger than the sum of its proper divisors (21606051).

64818141 is a wasteful number, since it uses less digits than its factorization.

64818141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21606050.

The product of its digits is 6144, while the sum is 33.

The square root of 64818141 is about 8050.9714320695. The cubic root of 64818141 is about 401.6972485989.

Adding to 64818141 its reverse (14181846), we get a palindrome (78999987).

The spelling of 64818141 in words is "sixty-four million, eight hundred eighteen thousand, one hundred forty-one".