220566464 has 14 divisors (see below), whose sum is σ = 437686704. Its totient is φ = 110283200.

The previous prime is 220566427. The next prime is 220566473. The reversal of 220566464 is 464665022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1723112 + ... + 1723239.

It is an arithmetic number, because the mean of its divisors is an integer number (31263336).

Almost surely, 2^220566464 is an apocalyptic number.

It is an amenable number.

220566464 is a deficient number, since it is larger than the sum of its proper divisors (217120240).

220566464 is an equidigital number, since it uses as much as digits as its factorization.

220566464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446363 (or 3446353 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 220566464 is about 14851.4801955899. The cubic root of 220566464 is about 604.1987562779.

The spelling of 220566464 in words is "two hundred twenty million, five hundred sixty-six thousand, four hundred sixty-four".