208956801 has 8 divisors (see below), whose sum is σ = 278722080. Its totient is φ = 139248032.

The previous prime is 208956773. The next prime is 208956841. The reversal of 208956801 is 108659802.

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 208956801 - 2⁹ = 208956289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 208956801.

It is not an unprimeable number, because it can be changed into a prime (208956841) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 4575 + ... + 20948.

It is an arithmetic number, because the mean of its divisors is an integer number (34840260).

Almost surely, 2^208956801 is an apocalyptic number.

It is an amenable number.

208956801 is a deficient number, since it is larger than the sum of its proper divisors (69765279).

208956801 is a wasteful number, since it uses less digits than its factorization.

208956801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28255.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 208956801 is about 14455.3381489331. The cubic root of 208956801 is about 593.4063239400.

The spelling of 208956801 in words is "two hundred eight million, nine hundred fifty-six thousand, eight hundred one".