64163121 has 16 divisors (see below), whose sum is σ = 93757440. Its totient is φ = 38707920.

The previous prime is 64163107. The next prime is 64163159. The reversal of 64163121 is 12136146.

64163121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64163121 - 2¹⁴ = 64146737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64163091 and 64163100.

It is not an unprimeable number, because it can be changed into a prime (64163101) 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 15 ways as a sum of consecutive naturals, for example, 3000 + ... + 11718.

It is an arithmetic number, because the mean of its divisors is an integer number (5859840).

Almost surely, 2^64163121 is an apocalyptic number.

It is an amenable number.

64163121 is a deficient number, since it is larger than the sum of its proper divisors (29594319).

64163121 is a wasteful number, since it uses less digits than its factorization.

64163121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8956.

The product of its digits is 864, while the sum is 24.

The square root of 64163121 is about 8010.1885745593. The cubic root of 64163121 is about 400.3395471045.

Adding to 64163121 its reverse (12136146), we get a palindrome (76299267).

The spelling of 64163121 in words is "sixty-four million, one hundred sixty-three thousand, one hundred twenty-one".