65669663 has 2 divisors, whose sum is σ = 65669664. Its totient is φ = 65669662.

The previous prime is 65669651. The next prime is 65669713. The reversal of 65669663 is 36696656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65669663 - 2⁶ = 65669599 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65669063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32834831 + 32834832.

It is an arithmetic number, because the mean of its divisors is an integer number (32834832).

Almost surely, 2^65669663 is an apocalyptic number.

65669663 is a deficient number, since it is larger than the sum of its proper divisors (1).

65669663 is an equidigital number, since it uses as much as digits as its factorization.

65669663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 47.

The square root of 65669663 is about 8103.6820643458. The cubic root of 65669663 is about 403.4486462327.

The spelling of 65669663 in words is "sixty-five million, six hundred sixty-nine thousand, six hundred sixty-three".