220865455 has 8 divisors (see below), whose sum is σ = 270677952. Its totient is φ = 172932768.

The previous prime is 220865453. The next prime is 220865461. The reversal of 220865455 is 554568022.

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 220865455 - 2¹ = 220865453 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 (220865453) 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, 469692 + ... + 470161.

It is an arithmetic number, because the mean of its divisors is an integer number (33834744).

Almost surely, 2^220865455 is an apocalyptic number.

220865455 is a deficient number, since it is larger than the sum of its proper divisors (49812497).

220865455 is an equidigital number, since it uses as much as digits as its factorization.

220865455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939905.

The product of its (nonzero) digits is 96000, while the sum is 37.

The square root of 220865455 is about 14861.5428203131. The cubic root of 220865455 is about 604.4716421633.

The spelling of 220865455 in words is "two hundred twenty million, eight hundred sixty-five thousand, four hundred fifty-five".