201291606 has 12 divisors (see below), whose sum is σ = 436131852. Its totient is φ = 67097196.

The previous prime is 201291593. The next prime is 201291667. The reversal of 201291606 is 606192102.

It is a self number, because there is not a number n which added to its sum of digits gives 201291606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5591416 + ... + 5591451.

It is an arithmetic number, because the mean of its divisors is an integer number (36344321).

Almost surely, 2^201291606 is an apocalyptic number.

201291606 is an abundant number, since it is smaller than the sum of its proper divisors (234840246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201291606 is a wasteful number, since it uses less digits than its factorization.

201291606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11182875 (or 11182872 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 201291606 is about 14187.7273021439. The cubic root of 201291606 is about 586.0597402859.

The spelling of 201291606 in words is "two hundred one million, two hundred ninety-one thousand, six hundred six".