208669253 has 8 divisors (see below), whose sum is σ = 228530400. Its totient is φ = 189352368.

The previous prime is 208669247. The next prime is 208669291. The reversal of 208669253 is 352966802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208669253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208669253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208669453) 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, 135263 + ... + 136796.

It is an arithmetic number, because the mean of its divisors is an integer number (28566300).

Almost surely, 2^208669253 is an apocalyptic number.

It is an amenable number.

208669253 is a deficient number, since it is larger than the sum of its proper divisors (19861147).

208669253 is a wasteful number, since it uses less digits than its factorization.

208669253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272131.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 208669253 is about 14445.3886413623. The cubic root of 208669253 is about 593.1340010952.

The spelling of 208669253 in words is "two hundred eight million, six hundred sixty-nine thousand, two hundred fifty-three".