669165341 has 4 divisors (see below), whose sum is σ = 720639612. Its totient is φ = 617691072.

The previous prime is 669165337. The next prime is 669165347. The reversal of 669165341 is 143561966.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81830116 + 587335225 = 9046^2 + 24235^2 .

It is a cyclic number.

It is not a de Polignac number, because 669165341 - 2² = 669165337 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669165347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25737116 + ... + 25737141.

It is an arithmetic number, because the mean of its divisors is an integer number (180159903).

Almost surely, 2^669165341 is an apocalyptic number.

It is an amenable number.

669165341 is a deficient number, since it is larger than the sum of its proper divisors (51474271).

669165341 is a wasteful number, since it uses less digits than its factorization.

669165341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51474270.

The product of its digits is 116640, while the sum is 41.

The square root of 669165341 is about 25868.2303414826. The cubic root of 669165341 is about 874.6705005888.

The spelling of 669165341 in words is "six hundred sixty-nine million, one hundred sixty-five thousand, three hundred forty-one".