201690259 has 8 divisors (see below), whose sum is σ = 203066640. Its totient is φ = 200318976.

The previous prime is 201690199. The next prime is 201690271. The reversal of 201690259 is 952096102.

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

It is a cyclic number.

It is not a de Polignac number, because 201690259 - 2¹⁷ = 201559187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201690659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106747 + ... + 108619.

It is an arithmetic number, because the mean of its divisors is an integer number (25383330).

Almost surely, 2^201690259 is an apocalyptic number.

201690259 is a deficient number, since it is larger than the sum of its proper divisors (1376381).

201690259 is a wasteful number, since it uses less digits than its factorization.

201690259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 201690259 is about 14201.7695728384. The cubic root of 201690259 is about 586.4463773842.

The spelling of 201690259 in words is "two hundred one million, six hundred ninety thousand, two hundred fifty-nine".