220867664 has 40 divisors (see below), whose sum is σ = 440388480. Its totient is φ = 107255808.

The previous prime is 220867657. The next prime is 220867667. The reversal of 220867664 is 466768022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220867667) 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 7 ways as a sum of consecutive naturals, for example, 103472 + ... + 105584.

It is an arithmetic number, because the mean of its divisors is an integer number (11009712).

Almost surely, 2^220867664 is an apocalyptic number.

It is an amenable number.

220867664 is a deficient number, since it is larger than the sum of its proper divisors (219520816).

220867664 is a wasteful number, since it uses less digits than its factorization.

220867664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307 (or 2301 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 220867664 is about 14861.6171394637. The cubic root of 220867664 is about 604.4736573772.

The spelling of 220867664 in words is "two hundred twenty million, eight hundred sixty-seven thousand, six hundred sixty-four".