220664052 has 54 divisors (see below), whose sum is σ = 648862578. Its totient is φ = 63046368.

The previous prime is 220663999. The next prime is 220664053. The reversal of 220664052 is 250466022.

It can be written as a sum of positive squares in only one way, i.e., 219810276 + 853776 = 14826^2 + 924^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220664053) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 60783 + ... + 64310.

Almost surely, 2^220664052 is an apocalyptic number.

It is an amenable number.

220664052 is an abundant number, since it is smaller than the sum of its proper divisors (428198526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220664052 is a wasteful number, since it uses less digits than its factorization.

220664052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125117 (or 125105 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 220664052 is about 14854.7652960254. The cubic root of 220664052 is about 604.2878508958.

The spelling of 220664052 in words is "two hundred twenty million, six hundred sixty-four thousand, fifty-two".