668534050 has 24 divisors (see below), whose sum is σ = 1266940116. Its totient is φ = 262367040.

The previous prime is 668534039. The next prime is 668534089. The reversal of 668534050 is 50435866.

It can be written as a sum of positive squares in 6 ways, for example, as 259564321 + 408969729 = 16111^2 + 20223^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123489 + ... + 128788.

Almost surely, 2^668534050 is an apocalyptic number.

668534050 is a deficient number, since it is larger than the sum of its proper divisors (598406066).

668534050 is a wasteful number, since it uses less digits than its factorization.

668534050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252342 (or 252337 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 668534050 is about 25856.0254099504. The cubic root of 668534050 is about 874.3953591492.

The spelling of 668534050 in words is "six hundred sixty-eight million, five hundred thirty-four thousand, fifty".