65669473 has 2 divisors, whose sum is σ = 65669474. Its totient is φ = 65669472.

The previous prime is 65669459. The next prime is 65669497. The reversal of 65669473 is 37496656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55249489 + 10419984 = 7433^2 + 3228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65669473 is a prime.

It is not a weakly prime, because it can be changed into another prime (65669573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32834736 + 32834737.

It is an arithmetic number, because the mean of its divisors is an integer number (32834737).

Almost surely, 2^65669473 is an apocalyptic number.

It is an amenable number.

65669473 is a deficient number, since it is larger than the sum of its proper divisors (1).

65669473 is an equidigital number, since it uses as much as digits as its factorization.

65669473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 46.

The square root of 65669473 is about 8103.6703412713. The cubic root of 65669473 is about 403.4482571372.

The spelling of 65669473 in words is "sixty-five million, six hundred sixty-nine thousand, four hundred seventy-three".