64383971 has 4 divisors (see below), whose sum is σ = 64653600. Its totient is φ = 64114344.

The previous prime is 64383967. The next prime is 64384009. The reversal of 64383971 is 17938346.

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 64383971 - 2² = 64383967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64383901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134456 + ... + 134933.

It is an arithmetic number, because the mean of its divisors is an integer number (16163400).

Almost surely, 2^64383971 is an apocalyptic number.

64383971 is a deficient number, since it is larger than the sum of its proper divisors (269629).

64383971 is a wasteful number, since it uses less digits than its factorization.

64383971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269628.

The product of its digits is 108864, while the sum is 41.

The square root of 64383971 is about 8023.9623005096. The cubic root of 64383971 is about 400.7983451359.

The spelling of 64383971 in words is "sixty-four million, three hundred eighty-three thousand, nine hundred seventy-one".