220198655 has 8 divisors (see below), whose sum is σ = 271380192. Its totient is φ = 171397728.

The previous prime is 220198613. The next prime is 220198669. The reversal of 220198655 is 556891022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220198655 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594947 + ... + 595316.

It is an arithmetic number, because the mean of its divisors is an integer number (33922524).

Almost surely, 2^220198655 is an apocalyptic number.

220198655 is a deficient number, since it is larger than the sum of its proper divisors (51181537).

220198655 is a wasteful number, since it uses less digits than its factorization.

220198655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190305.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 220198655 is about 14839.0921218247. The cubic root of 220198655 is about 603.8627224457.

The spelling of 220198655 in words is "two hundred twenty million, one hundred ninety-eight thousand, six hundred fifty-five".