669432353 has 2 divisors, whose sum is σ = 669432354. Its totient is φ = 669432352.

The previous prime is 669432277. The next prime is 669432371. The reversal of 669432353 is 353234966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 469718929 + 199713424 = 21673^2 + 14132^2 .

It is a cyclic number.

It is not a de Polignac number, because 669432353 - 2⁸ = 669432097 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 669432353.

It is not a weakly prime, because it can be changed into another prime (669432373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334716176 + 334716177.

It is an arithmetic number, because the mean of its divisors is an integer number (334716177).

Almost surely, 2^669432353 is an apocalyptic number.

It is an amenable number.

669432353 is a deficient number, since it is larger than the sum of its proper divisors (1).

669432353 is an equidigital number, since it uses as much as digits as its factorization.

669432353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 41.

The square root of 669432353 is about 25873.3908291897. The cubic root of 669432353 is about 874.7868228432.

It can be divided in two parts, 66943 and 2353, that added together give a palindrome (69296).

The spelling of 669432353 in words is "six hundred sixty-nine million, four hundred thirty-two thousand, three hundred fifty-three".