199621070 has 16 divisors (see below), whose sum is σ = 391983408. Its totient is φ = 72589440.

The previous prime is 199621069. The next prime is 199621091. The reversal of 199621070 is 70126991.

It is a self number, because there is not a number n which added to its sum of digits gives 199621070.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907259 + ... + 907478.

It is an arithmetic number, because the mean of its divisors is an integer number (24498963).

Almost surely, 2^199621070 is an apocalyptic number.

199621070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199621070 is a deficient number, since it is larger than the sum of its proper divisors (192362338).

199621070 is a wasteful number, since it uses less digits than its factorization.

199621070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814755.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 199621070 is about 14128.7320733320. The cubic root of 199621070 is about 584.4339814642.

The spelling of 199621070 in words is "one hundred ninety-nine million, six hundred twenty-one thousand, seventy".