220566465 has 24 divisors (see below), whose sum is σ = 436932288. Its totient is φ = 100830240.

The previous prime is 220566427. The next prime is 220566473. The reversal of 220566465 is 564665022.

220566465 is a `hidden beast` number, since 2 + 2 + 0 + 5 + 6 + 646 + 5 = 666.

It is not a de Polignac number, because 220566465 - 2⁹ = 220565953 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 349791 + ... + 350420.

It is an arithmetic number, because the mean of its divisors is an integer number (18205512).

Almost surely, 2^220566465 is an apocalyptic number.

It is an amenable number.

220566465 is a deficient number, since it is larger than the sum of its proper divisors (216365823).

220566465 is a wasteful number, since it uses less digits than its factorization.

220566465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700229 (or 700226 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 220566465 is about 14851.4802292566. The cubic root of 220566465 is about 604.1987571910.

The spelling of 220566465 in words is "two hundred twenty million, five hundred sixty-six thousand, four hundred sixty-five".