220497427 has 4 divisors (see below), whose sum is σ = 220596376. Its totient is φ = 220398480.

The previous prime is 220497419. The next prime is 220497439. The reversal of 220497427 is 724794022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220497427 - 2³ = 220497419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220497457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46053 + ... + 50614.

It is an arithmetic number, because the mean of its divisors is an integer number (55149094).

Almost surely, 2^220497427 is an apocalyptic number.

220497427 is a deficient number, since it is larger than the sum of its proper divisors (98949).

220497427 is an equidigital number, since it uses as much as digits as its factorization.

220497427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98948.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 220497427 is about 14849.1557672482. The cubic root of 220497427 is about 604.1357119064.

The spelling of 220497427 in words is "two hundred twenty million, four hundred ninety-seven thousand, four hundred twenty-seven".