64635233 has 6 divisors (see below), whose sum is σ = 69989814. Its totient is φ = 59663136.

The previous prime is 64635227. The next prime is 64635301. The reversal of 64635233 is 33253646.

It can be written as a sum of positive squares in 3 ways, for example, as 4231249 + 60403984 = 2057^2 + 7772^2 .

It is not a de Polignac number, because 64635233 - 2¹⁶ = 64569697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64635233.

It is not an unprimeable number, because it can be changed into a prime (64635133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 191060 + ... + 191397.

It is an arithmetic number, because the mean of its divisors is an integer number (11664969).

Almost surely, 2^64635233 is an apocalyptic number.

It is an amenable number.

64635233 is a deficient number, since it is larger than the sum of its proper divisors (5354581).

64635233 is a wasteful number, since it uses less digits than its factorization.

64635233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382483 (or 382470 counting only the distinct ones).

The product of its digits is 38880, while the sum is 32.

The square root of 64635233 is about 8039.6040325379. The cubic root of 64635233 is about 401.3190475858.

Adding to 64635233 its reverse (33253646), we get a palindrome (97888879).

The spelling of 64635233 in words is "sixty-four million, six hundred thirty-five thousand, two hundred thirty-three".