669875210 has 48 divisors (see below), whose sum is σ = 1286368776. Its totient is φ = 251099136.

The previous prime is 669875209. The next prime is 669875257. The reversal of 669875210 is 12578966.

It can be written as a sum of positive squares in 4 ways, for example, as 618566641 + 51308569 = 24871^2 + 7163^2 .

It is a super-4 number, since 4×669875210⁴ (a number of 36 digits) contains 4444 as substring.

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 23 ways as a sum of consecutive naturals, for example, 349214 + ... + 351126.

Almost surely, 2^669875210 is an apocalyptic number.

669875210 is a deficient number, since it is larger than the sum of its proper divisors (616493566).

669875210 is a wasteful number, since it uses less digits than its factorization.

669875210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 2036 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 669875210 is about 25881.9475696865. The cubic root of 669875210 is about 874.9796827936.

The spelling of 669875210 in words is "six hundred sixty-nine million, eight hundred seventy-five thousand, two hundred ten".