208422693 has 8 divisors (see below), whose sum is σ = 308774400. Its totient is φ = 138948444.

The previous prime is 208422689. The next prime is 208422707. The reversal of 208422693 is 396224802.

It is not a de Polignac number, because 208422693 - 2² = 208422689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208422653) 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, 3859653 + ... + 3859706.

It is an arithmetic number, because the mean of its divisors is an integer number (38596800).

Almost surely, 2^208422693 is an apocalyptic number.

It is an amenable number.

208422693 is a deficient number, since it is larger than the sum of its proper divisors (100351707).

208422693 is an equidigital number, since it uses as much as digits as its factorization.

208422693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7719368 (or 7719362 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 208422693 is about 14436.8519075316. The cubic root of 208422693 is about 592.9002967129.

The spelling of 208422693 in words is "two hundred eight million, four hundred twenty-two thousand, six hundred ninety-three".