669115033 has 2 divisors, whose sum is σ = 669115034. Its totient is φ = 669115032.

The previous prime is 669115009. The next prime is 669115079. The reversal of 669115033 is 330511966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 582401689 + 86713344 = 24133^2 + 9312^2 .

It is a cyclic number.

It is not a de Polignac number, because 669115033 - 2⁹ = 669114521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 669115033.

It is not a weakly prime, because it can be changed into another prime (669115093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334557516 + 334557517.

It is an arithmetic number, because the mean of its divisors is an integer number (334557517).

Almost surely, 2^669115033 is an apocalyptic number.

It is an amenable number.

669115033 is a deficient number, since it is larger than the sum of its proper divisors (1).

669115033 is an equidigital number, since it uses as much as digits as its factorization.

669115033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 669115033 is about 25867.2579335344. The cubic root of 669115033 is about 874.6485807315.

Adding to 669115033 its reverse (330511966), we get a palindrome (999626999).

The spelling of 669115033 in words is "six hundred sixty-nine million, one hundred fifteen thousand, thirty-three".