64002161 has 8 divisors (see below), whose sum is σ = 67962240. Its totient is φ = 60063808.

The previous prime is 64002151. The next prime is 64002179. The reversal of 64002161 is 16120046.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64002161 - 2¹⁰ = 64001137 is a prime.

It is a super-2 number, since 2×64002161² = 8192553225339842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64002121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860 + ... + 11346.

It is an arithmetic number, because the mean of its divisors is an integer number (8495280).

Almost surely, 2^64002161 is an apocalyptic number.

It is an amenable number.

64002161 is a deficient number, since it is larger than the sum of its proper divisors (3960079).

64002161 is a wasteful number, since it uses less digits than its factorization.

64002161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10863.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 64002161 is about 8000.1350613599. The cubic root of 64002161 is about 400.0045020327.

The spelling of 64002161 in words is "sixty-four million, two thousand, one hundred sixty-one".