199556005 has 8 divisors (see below), whose sum is σ = 261237024. Its totient is φ = 145131600.

The previous prime is 199556003. The next prime is 199556009. The reversal of 199556005 is 500655991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199556005 - 2¹ = 199556003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199556003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1814091 + ... + 1814200.

It is an arithmetic number, because the mean of its divisors is an integer number (32654628).

Almost surely, 2^199556005 is an apocalyptic number.

It is an amenable number.

199556005 is a deficient number, since it is larger than the sum of its proper divisors (61681019).

199556005 is a wasteful number, since it uses less digits than its factorization.

199556005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628307.

The product of its (nonzero) digits is 60750, while the sum is 40.

The square root of 199556005 is about 14126.4293082152. The cubic root of 199556005 is about 584.3704772639.

The spelling of 199556005 in words is "one hundred ninety-nine million, five hundred fifty-six thousand, five".