208681474 has 8 divisors (see below), whose sum is σ = 313170300. Its totient is φ = 104291376.

The previous prime is 208681471. The next prime is 208681489. The reversal of 208681474 is 474186802.

It can be written as a sum of positive squares in 2 ways, for example, as 208600249 + 81225 = 14443^2 + 285^2 .

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

It is not an unprimeable number, because it can be changed into a prime (208681471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19149 + ... + 28000.

Almost surely, 2^208681474 is an apocalyptic number.

208681474 is a deficient number, since it is larger than the sum of its proper divisors (104488826).

208681474 is a wasteful number, since it uses less digits than its factorization.

208681474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49364.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 208681474 is about 14445.8116421335. The cubic root of 208681474 is about 593.1455801036.

The spelling of 208681474 in words is "two hundred eight million, six hundred eighty-one thousand, four hundred seventy-four".