64211983 has 8 divisors (see below), whose sum is σ = 71943120. Its totient is φ = 56796480.

The previous prime is 64211981. The next prime is 64211989. The reversal of 64211983 is 38911246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64211983 - 2¹ = 64211981 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 (64211981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78478 + ... + 79291.

It is an arithmetic number, because the mean of its divisors is an integer number (8992890).

Almost surely, 2^64211983 is an apocalyptic number.

64211983 is a deficient number, since it is larger than the sum of its proper divisors (7731137).

64211983 is a wasteful number, since it uses less digits than its factorization.

64211983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157817.

The product of its digits is 10368, while the sum is 34.

The square root of 64211983 is about 8013.2379847350. The cubic root of 64211983 is about 400.4411445499.

The spelling of 64211983 in words is "sixty-four million, two hundred eleven thousand, nine hundred eighty-three".