64067971 has 8 divisors (see below), whose sum is σ = 69951024. Its totient is φ = 58194720.

The previous prime is 64067963. The next prime is 64067987. The reversal of 64067971 is 17976046.

64067971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64067971 - 2³ = 64067963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64067071) 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 7 ways as a sum of consecutive naturals, for example, 21165 + ... + 24001.

It is an arithmetic number, because the mean of its divisors is an integer number (8743878).

Almost surely, 2^64067971 is an apocalyptic number.

64067971 is a deficient number, since it is larger than the sum of its proper divisors (5883053).

64067971 is a wasteful number, since it uses less digits than its factorization.

64067971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 64067971 is about 8004.2470601550. The cubic root of 64067971 is about 400.1415561487.

The spelling of 64067971 in words is "sixty-four million, sixty-seven thousand, nine hundred seventy-one".