199996670 has 24 divisors (see below), whose sum is σ = 382421304. Its totient is φ = 75291776.

The previous prime is 199996639. The next prime is 199996681. The reversal of 199996670 is 76699991.

It is a happy number.

It is a super-2 number, since 2×199996670² = 79997336022177800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31712 + ... + 37491.

It is an arithmetic number, because the mean of its divisors is an integer number (15934221).

Almost surely, 2^199996670 is an apocalyptic number.

199996670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199996670 is a deficient number, since it is larger than the sum of its proper divisors (182424634).

199996670 is a wasteful number, since it uses less digits than its factorization.

199996670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69244 (or 69227 counting only the distinct ones).

The product of its (nonzero) digits is 1653372, while the sum is 56.

The square root of 199996670 is about 14142.0178899618. The cubic root of 199996670 is about 584.8003019649.

The spelling of 199996670 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, six hundred seventy".