669895311 has 4 divisors (see below), whose sum is σ = 893193752. Its totient is φ = 446596872.

The previous prime is 669895253. The next prime is 669895313. The reversal of 669895311 is 113598966.

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

It is not a de Polignac number, because 669895311 - 2¹⁴ = 669878927 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 (669895313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111649216 + ... + 111649221.

It is an arithmetic number, because the mean of its divisors is an integer number (223298438).

Almost surely, 2^669895311 is an apocalyptic number.

669895311 is a deficient number, since it is larger than the sum of its proper divisors (223298441).

669895311 is a wasteful number, since it uses less digits than its factorization.

669895311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223298440.

The product of its digits is 349920, while the sum is 48.

The square root of 669895311 is about 25882.3358876281. The cubic root of 669895311 is about 874.9884345682.

The spelling of 669895311 in words is "six hundred sixty-nine million, eight hundred ninety-five thousand, three hundred eleven".