220497823 has 16 divisors (see below), whose sum is σ = 280139776. Its totient is φ = 168829920.

The previous prime is 220497791. The next prime is 220497829. The reversal of 220497823 is 328794022.

It is not a de Polignac number, because 220497823 - 2⁵ = 220497791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220497829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36261 + ... + 41902.

It is an arithmetic number, because the mean of its divisors is an integer number (17508736).

Almost surely, 2^220497823 is an apocalyptic number.

220497823 is a deficient number, since it is larger than the sum of its proper divisors (59641953).

220497823 is a wasteful number, since it uses less digits than its factorization.

220497823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78214.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 220497823 is about 14849.1691013336. The cubic root of 220497823 is about 604.1360735699.

The spelling of 220497823 in words is "two hundred twenty million, four hundred ninety-seven thousand, eight hundred twenty-three".