220998783 has 8 divisors (see below), whose sum is σ = 304170496. Its totient is φ = 142579800.

The previous prime is 220998781. The next prime is 220998803. The reversal of 220998783 is 387899022.

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 220998783 - 2¹ = 220998781 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 (220998781) 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, 1188073 + ... + 1188258.

It is an arithmetic number, because the mean of its divisors is an integer number (38021312).

Almost surely, 2^220998783 is an apocalyptic number.

220998783 is a deficient number, since it is larger than the sum of its proper divisors (83171713).

220998783 is a wasteful number, since it uses less digits than its factorization.

220998783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376365.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 220998783 is about 14866.0278151226. The cubic root of 220998783 is about 604.5932498084.

The spelling of 220998783 in words is "two hundred twenty million, nine hundred ninety-eight thousand, seven hundred eighty-three".