201690598 has 4 divisors (see below), whose sum is σ = 302535900. Its totient is φ = 100845298.

The previous prime is 201690571. The next prime is 201690631. The reversal of 201690598 is 895096102.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 201690598.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50422648 + ... + 50422651.

It is an arithmetic number, because the mean of its divisors is an integer number (75633975).

Almost surely, 2^201690598 is an apocalyptic number.

201690598 is a deficient number, since it is larger than the sum of its proper divisors (100845302).

201690598 is a wasteful number, since it uses less digits than its factorization.

201690598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100845301.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 201690598 is about 14201.7815079658. The cubic root of 201690598 is about 586.4467059494.

The spelling of 201690598 in words is "two hundred one million, six hundred ninety thousand, five hundred ninety-eight".