64623233 has 4 divisors (see below), whose sum is σ = 64659540. Its totient is φ = 64586928.

The previous prime is 64623197. The next prime is 64623259. The reversal of 64623233 is 33232646.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24275329 + 40347904 = 4927^2 + 6352^2 .

It is a cyclic number.

It is not a de Polignac number, because 64623233 - 2⁸ = 64622977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64623196 and 64623205.

It is not an unprimeable number, because it can be changed into a prime (64620233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15338 + ... + 19091.

It is an arithmetic number, because the mean of its divisors is an integer number (16164885).

Almost surely, 2^64623233 is an apocalyptic number.

It is an amenable number.

64623233 is a deficient number, since it is larger than the sum of its proper divisors (36307).

64623233 is a wasteful number, since it uses less digits than its factorization.

64623233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36306.

The product of its digits is 15552, while the sum is 29.

The square root of 64623233 is about 8038.8576924834. The cubic root of 64623233 is about 401.2942101176.

Adding to 64623233 its reverse (33232646), we get a palindrome (97855879).

The spelling of 64623233 in words is "sixty-four million, six hundred twenty-three thousand, two hundred thirty-three".