220405773 has 12 divisors (see below), whose sum is σ = 341854080. Its totient is φ = 125946072.

The previous prime is 220405763. The next prime is 220405819. The reversal of 220405773 is 377504022.

It is not a de Polignac number, because 220405773 - 2⁸ = 220405517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220405773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220405763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 749533 + ... + 749826.

It is an arithmetic number, because the mean of its divisors is an integer number (28487840).

Almost surely, 2^220405773 is an apocalyptic number.

It is an amenable number.

220405773 is a deficient number, since it is larger than the sum of its proper divisors (121448307).

220405773 is a wasteful number, since it uses less digits than its factorization.

220405773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499376 (or 1499369 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 220405773 is about 14846.0692777583. The cubic root of 220405773 is about 604.0519934263.

Adding to 220405773 its reverse (377504022), we get a palindrome (597909795).

The spelling of 220405773 in words is "two hundred twenty million, four hundred five thousand, seven hundred seventy-three".