64233623 has 12 divisors (see below), whose sum is σ = 68480280. Its totient is φ = 60081840.

The previous prime is 64233619. The next prime is 64233709. The reversal of 64233623 is 32633246.

It is not a de Polignac number, because 64233623 - 2² = 64233619 is a prime.

It is a super-2 number, since 2×64233623² = 8251916647412258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64283623) 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, 325961 + ... + 326157.

It is an arithmetic number, because the mean of its divisors is an integer number (5706690).

Almost surely, 2^64233623 is an apocalyptic number.

64233623 is a deficient number, since it is larger than the sum of its proper divisors (4246657).

64233623 is a wasteful number, since it uses less digits than its factorization.

64233623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 347 counting only the distinct ones).

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

The square root of 64233623 is about 8014.5881366418. The cubic root of 64233623 is about 400.4861235537.

Adding to 64233623 its reverse (32633246), we get a palindrome (96866869).

The spelling of 64233623 in words is "sixty-four million, two hundred thirty-three thousand, six hundred twenty-three".