64611233 has 2 divisors, whose sum is σ = 64611234. Its totient is φ = 64611232.

The previous prime is 64611227. The next prime is 64611247. The reversal of 64611233 is 33211646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55472704 + 9138529 = 7448^2 + 3023^2 .

It is a cyclic number.

It is not a de Polignac number, because 64611233 - 2⁸ = 64610977 is a prime.

It is a super-2 number, since 2×64611233² = 8349222859560578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64631233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32305616 + 32305617.

It is an arithmetic number, because the mean of its divisors is an integer number (32305617).

Almost surely, 2^64611233 is an apocalyptic number.

It is an amenable number.

64611233 is a deficient number, since it is larger than the sum of its proper divisors (1).

64611233 is an equidigital number, since it uses as much as digits as its factorization.

64611233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 64611233 is about 8038.1112831311. Note that the first 3 decimals coincide. The cubic root of 64611233 is about 401.2693695744.

Adding to 64611233 its reverse (33211646), we get a palindrome (97822879).

The spelling of 64611233 in words is "sixty-four million, six hundred eleven thousand, two hundred thirty-three".