64883971 has 4 divisors (see below), whose sum is σ = 65105712. Its totient is φ = 64662232.

The previous prime is 64883969. The next prime is 64883983. The reversal of 64883971 is 17938846.

It is a happy number.

64883971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64883971 - 2¹ = 64883969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64883911) 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 3 ways as a sum of consecutive naturals, for example, 110431 + ... + 111016.

It is an arithmetic number, because the mean of its divisors is an integer number (16276428).

Almost surely, 2^64883971 is an apocalyptic number.

64883971 is a deficient number, since it is larger than the sum of its proper divisors (221741).

64883971 is a wasteful number, since it uses less digits than its factorization.

64883971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221740.

The product of its digits is 290304, while the sum is 46.

The square root of 64883971 is about 8055.0587210771. The cubic root of 64883971 is about 401.8331919337.

The spelling of 64883971 in words is "sixty-four million, eight hundred eighty-three thousand, nine hundred seventy-one".