220920473 has 2 divisors, whose sum is σ = 220920474. Its totient is φ = 220920472.

The previous prime is 220920443. The next prime is 220920487. The reversal of 220920473 is 374029022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214710409 + 6210064 = 14653^2 + 2492^2 .

It is a cyclic number.

It is not a de Polignac number, because 220920473 - 2⁶ = 220920409 is a prime.

It is not a weakly prime, because it can be changed into another prime (220920433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110460236 + 110460237.

It is an arithmetic number, because the mean of its divisors is an integer number (110460237).

Almost surely, 2^220920473 is an apocalyptic number.

It is an amenable number.

220920473 is a deficient number, since it is larger than the sum of its proper divisors (1).

220920473 is an equidigital number, since it uses as much as digits as its factorization.

220920473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 220920473 is about 14863.3937241802. The cubic root of 220920473 is about 604.5218296704.

Adding to 220920473 its reverse (374029022), we get a palindrome (594949495).

The spelling of 220920473 in words is "two hundred twenty million, nine hundred twenty thousand, four hundred seventy-three".