208880164 has 6 divisors (see below), whose sum is σ = 365540294. Its totient is φ = 104440080.

The previous prime is 208880159. The next prime is 208880171. The reversal of 208880164 is 461088802.

It can be written as a sum of positive squares in only one way, i.e., 112996900 + 95883264 = 10630^2 + 9792^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 26110017 + ... + 26110024.

Almost surely, 2^208880164 is an apocalyptic number.

It is an amenable number.

208880164 is a deficient number, since it is larger than the sum of its proper divisors (156660130).

208880164 is a wasteful number, since it uses less digits than its factorization.

208880164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52220045 (or 52220043 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 208880164 is about 14452.6870857983. The cubic root of 208880164 is about 593.3337691646. Note that the first 3 decimals are identical.

The spelling of 208880164 in words is "two hundred eight million, eight hundred eighty thousand, one hundred sixty-four".