669126198 has 32 divisors (see below), whose sum is σ = 1465632000. Its totient is φ = 202394016.

The previous prime is 669126197. The next prime is 669126203. The reversal of 669126198 is 891621966.

669126198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669126197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68098 + ... + 77301.

It is an arithmetic number, because the mean of its divisors is an integer number (45801000).

Almost surely, 2^669126198 is an apocalyptic number.

669126198 is an abundant number, since it is smaller than the sum of its proper divisors (796505802).

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

669126198 is a wasteful number, since it uses less digits than its factorization.

669126198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145476.

The product of its digits is 279936, while the sum is 48.

The square root of 669126198 is about 25867.4737460000. The cubic root of 669126198 is about 874.6534455637.

The spelling of 669126198 in words is "six hundred sixty-nine million, one hundred twenty-six thousand, one hundred ninety-eight".