199906966 has 12 divisors (see below), whose sum is σ = 348817428. Its totient is φ = 85674372.

The previous prime is 199906963. The next prime is 199906969. The reversal of 199906966 is 669609991.

It is an interprime number because it is at equal distance from previous prime (199906963) and next prime (199906969).

It is a super-3 number, since 3×199906966³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199906963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1019836 + ... + 1020031.

It is an arithmetic number, because the mean of its divisors is an integer number (29068119).

Almost surely, 2^199906966 is an apocalyptic number.

199906966 is a deficient number, since it is larger than the sum of its proper divisors (148910462).

199906966 is a wasteful number, since it uses less digits than its factorization.

199906966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039883 (or 2039876 counting only the distinct ones).

The product of its (nonzero) digits is 1417176, while the sum is 55.

The square root of 199906966 is about 14138.8459925130. The cubic root of 199906966 is about 584.7128558900.

The spelling of 199906966 in words is "one hundred ninety-nine million, nine hundred six thousand, nine hundred sixty-six".