220366646 has 8 divisors (see below), whose sum is σ = 333759504. Its totient is φ = 109113480.

The previous prime is 220366603. The next prime is 220366651. The reversal of 220366646 is 646663022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×220366646² = 97122917338578632, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 534665 + ... + 535076.

It is an arithmetic number, because the mean of its divisors is an integer number (41719938).

Almost surely, 2^220366646 is an apocalyptic number.

220366646 is a deficient number, since it is larger than the sum of its proper divisors (113392858).

220366646 is a wasteful number, since it uses less digits than its factorization.

220366646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069846.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 220366646 is about 14844.7514630593. The cubic root of 220366646 is about 604.0162470229.

It can be divided in two parts, 22036 and 6646, that added together give a palindrome (28682).

The spelling of 220366646 in words is "two hundred twenty million, three hundred sixty-six thousand, six hundred forty-six".