65651233 has 2 divisors, whose sum is σ = 65651234. Its totient is φ = 65651232.

The previous prime is 65651231. The next prime is 65651237. The reversal of 65651233 is 33215656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57653649 + 7997584 = 7593^2 + 2828^2 .

It is a cyclic number.

It is not a de Polignac number, because 65651233 - 2¹ = 65651231 is a prime.

Together with 65651231, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 65651195 and 65651204.

It is not a weakly prime, because it can be changed into another prime (65651231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32825616 + 32825617.

It is an arithmetic number, because the mean of its divisors is an integer number (32825617).

Almost surely, 2^65651233 is an apocalyptic number.

It is an amenable number.

65651233 is a deficient number, since it is larger than the sum of its proper divisors (1).

65651233 is an equidigital number, since it uses as much as digits as its factorization.

65651233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 31.

The square root of 65651233 is about 8102.5448471452. The cubic root of 65651233 is about 403.4109004715.

Adding to 65651233 its reverse (33215656), we get a palindrome (98866889).

The spelling of 65651233 in words is "sixty-five million, six hundred fifty-one thousand, two hundred thirty-three".