64017871 has 4 divisors (see below), whose sum is σ = 64152000. Its totient is φ = 63883744.

The previous prime is 64017857. The next prime is 64017893. The reversal of 64017871 is 17871046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64017871 - 2⁷ = 64017743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64014871) 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, 66346 + ... + 67303.

It is an arithmetic number, because the mean of its divisors is an integer number (16038000).

Almost surely, 2^64017871 is an apocalyptic number.

64017871 is a deficient number, since it is larger than the sum of its proper divisors (134129).

64017871 is a wasteful number, since it uses less digits than its factorization.

64017871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134128.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 64017871 is about 8001.1168595390. The cubic root of 64017871 is about 400.0372277851.

The spelling of 64017871 in words is "sixty-four million, seventeen thousand, eight hundred seventy-one".