64441333 has 12 divisors (see below), whose sum is σ = 71547084. Its totient is φ = 57992000.

The previous prime is 64441319. The next prime is 64441357. The reversal of 64441333 is 33314446.

It can be written as a sum of positive squares in 2 ways, for example, as 49871844 + 14569489 = 7062^2 + 3817^2 .

It is not a de Polignac number, because 64441333 - 2⁹ = 64440821 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 (64441313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9585 + ... + 14857.

It is an arithmetic number, because the mean of its divisors is an integer number (5962257).

Almost surely, 2^64441333 is an apocalyptic number.

It is an amenable number.

64441333 is a deficient number, since it is larger than the sum of its proper divisors (7105751).

64441333 is a wasteful number, since it uses less digits than its factorization.

64441333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396 (or 5385 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

The square root of 64441333 is about 8027.5359233080. The cubic root of 64441333 is about 400.9173383676.

Adding to 64441333 its reverse (33314446), we get a palindrome (97755779).

It can be divided in two parts, 644413 and 33, that added together give a palindrome (644446).

The spelling of 64441333 in words is "sixty-four million, four hundred forty-one thousand, three hundred thirty-three".