219808061 has 8 divisors (see below), whose sum is σ = 240796800. Its totient is φ = 198987040.

The previous prime is 219808051. The next prime is 219808097. The reversal of 219808061 is 160808912.

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

It is a cyclic number.

It is not a de Polignac number, because 219808061 - 2⁶ = 219807997 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 (219808021) 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, 39176 + ... + 44433.

It is an arithmetic number, because the mean of its divisors is an integer number (30099600).

Almost surely, 2^219808061 is an apocalyptic number.

It is an amenable number.

219808061 is a deficient number, since it is larger than the sum of its proper divisors (20988739).

219808061 is a wasteful number, since it uses less digits than its factorization.

219808061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83859.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 219808061 is about 14825.9252999602. The cubic root of 219808061 is about 603.5054620815.

The spelling of 219808061 in words is "two hundred nineteen million, eight hundred eight thousand, sixty-one".