208719061 has 4 divisors (see below), whose sum is σ = 215916300. Its totient is φ = 201521824.

The previous prime is 208719059. The next prime is 208719067. The reversal of 208719061 is 160917802.

It is a happy number.

208719061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35928036 + 172791025 = 5994^2 + 13145^2 .

It is a cyclic number.

It is not a de Polignac number, because 208719061 - 2¹ = 208719059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208719067) 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, 3598576 + ... + 3598633.

It is an arithmetic number, because the mean of its divisors is an integer number (53979075).

Almost surely, 2^208719061 is an apocalyptic number.

It is an amenable number.

208719061 is a deficient number, since it is larger than the sum of its proper divisors (7197239).

208719061 is an equidigital number, since it uses as much as digits as its factorization.

208719061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7197238.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 208719061 is about 14447.1125488798. The cubic root of 208719061 is about 593.1811897564.

The spelling of 208719061 in words is "two hundred eight million, seven hundred nineteen thousand, sixty-one".