669141966 has 16 divisors (see below), whose sum is σ = 1374454224. Its totient is φ = 217018944.

The previous prime is 669141919. The next prime is 669142021.

669141966 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1506855 + ... + 1507298.

It is an arithmetic number, because the mean of its divisors is an integer number (85903389).

Almost surely, 2^669141966 is an apocalyptic number.

669141966 is an abundant number, since it is smaller than the sum of its proper divisors (705312258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669141966 is a wasteful number, since it uses less digits than its factorization.

669141966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014195.

The product of its digits is 419904, while the sum is 48.

The square root of 669141966 is about 25867.7785285092. The cubic root of 669141966 is about 874.6603159305.

The spelling of 669141966 in words is "six hundred sixty-nine million, one hundred forty-one thousand, nine hundred sixty-six".