220356655 has 8 divisors (see below), whose sum is σ = 266995872. Its totient is φ = 174573408.

The previous prime is 220356637. The next prime is 220356671. The reversal of 220356655 is 556653022.

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-220356655 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220356655.

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, 213424 + ... + 214453.

It is an arithmetic number, because the mean of its divisors is an integer number (33374484).

Almost surely, 2^220356655 is an apocalyptic number.

220356655 is a deficient number, since it is larger than the sum of its proper divisors (46639217).

220356655 is a wasteful number, since it uses less digits than its factorization.

220356655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427985.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 220356655 is about 14844.4149430013. The cubic root of 220356655 is about 604.0071185732.

The spelling of 220356655 in words is "two hundred twenty million, three hundred fifty-six thousand, six hundred fifty-five".