64166171 has 4 divisors (see below), whose sum is σ = 64264200. Its totient is φ = 64068144.

The previous prime is 64166147. The next prime is 64166213. The reversal of 64166171 is 17166146.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17166146 = 2 ⋅8583073.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64166171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64126171) 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, 48026 + ... + 49343.

It is an arithmetic number, because the mean of its divisors is an integer number (16066050).

Almost surely, 2^64166171 is an apocalyptic number.

64166171 is a deficient number, since it is larger than the sum of its proper divisors (98029).

64166171 is an equidigital number, since it uses as much as digits as its factorization.

64166171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98028.

The product of its digits is 6048, while the sum is 32.

The square root of 64166171 is about 8010.3789548310. The cubic root of 64166171 is about 400.3458903967.

The spelling of 64166171 in words is "sixty-four million, one hundred sixty-six thousand, one hundred seventy-one".