65318623 has 2 divisors, whose sum is σ = 65318624. Its totient is φ = 65318622.

The previous prime is 65318621. The next prime is 65318647. The reversal of 65318623 is 32681356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65318623 - 2¹ = 65318621 is a prime.

It is a super-2 number, since 2×65318623² = 8533045021232258, which contains 22 as substring.

Together with 65318621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65318621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32659311 + 32659312.

It is an arithmetic number, because the mean of its divisors is an integer number (32659312).

Almost surely, 2^65318623 is an apocalyptic number.

65318623 is a deficient number, since it is larger than the sum of its proper divisors (1).

65318623 is an equidigital number, since it uses as much as digits as its factorization.

65318623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 65318623 is about 8081.9937515442. The cubic root of 65318623 is about 402.7284774594.

Adding to 65318623 its reverse (32681356), we get a palindrome (97999979).

The spelling of 65318623 in words is "sixty-five million, three hundred eighteen thousand, six hundred twenty-three".