64285121 has 4 divisors (see below), whose sum is σ = 64364244. Its totient is φ = 64206000.

The previous prime is 64285099. The next prime is 64285127. The reversal of 64285121 is 12158246.

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 11155600 + 53129521 = 3340^2 + 7289^2 .

It is a cyclic number.

It is not a de Polignac number, because 64285121 - 2⁶ = 64285057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64285127) 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, 38330 + ... + 39971.

It is an arithmetic number, because the mean of its divisors is an integer number (16091061).

Almost surely, 2^64285121 is an apocalyptic number.

It is an amenable number.

64285121 is a deficient number, since it is larger than the sum of its proper divisors (79123).

64285121 is an equidigital number, since it uses as much as digits as its factorization.

64285121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79122.

The product of its digits is 3840, while the sum is 29.

The square root of 64285121 is about 8017.8002594228. The cubic root of 64285121 is about 400.5931221639.

The spelling of 64285121 in words is "sixty-four million, two hundred eighty-five thousand, one hundred twenty-one".