199693670 has 16 divisors (see below), whose sum is σ = 392125968. Its totient is φ = 72615840.

The previous prime is 199693643. The next prime is 199693693. The reversal of 199693670 is 76396991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907589 + ... + 907808.

It is an arithmetic number, because the mean of its divisors is an integer number (24507873).

Almost surely, 2^199693670 is an apocalyptic number.

199693670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199693670 is a deficient number, since it is larger than the sum of its proper divisors (192432298).

199693670 is a wasteful number, since it uses less digits than its factorization.

199693670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815415.

The product of its (nonzero) digits is 551124, while the sum is 50.

The square root of 199693670 is about 14131.3010724420. The cubic root of 199693670 is about 584.5048236258.

The spelling of 199693670 in words is "one hundred ninety-nine million, six hundred ninety-three thousand, six hundred seventy".