220904871 has 8 divisors (see below), whose sum is σ = 321316224. Its totient is φ = 133881720.

The previous prime is 220904863. The next prime is 220904891. The reversal of 220904871 is 178409022.

It is a happy number.

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

It is not a de Polignac number, because 220904871 - 2³ = 220904863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 6694087 = 220904871 / (2 + 2 + 0 + 9 + 0 + 4 + 8 + 7 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220904891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3347011 + ... + 3347076.

It is an arithmetic number, because the mean of its divisors is an integer number (40164528).

Almost surely, 2^220904871 is an apocalyptic number.

220904871 is a deficient number, since it is larger than the sum of its proper divisors (100411353).

220904871 is a wasteful number, since it uses less digits than its factorization.

220904871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6694101.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 220904871 is about 14862.8688684251. The cubic root of 220904871 is about 604.5075983477.

The spelling of 220904871 in words is "two hundred twenty million, nine hundred four thousand, eight hundred seventy-one".