220509964 has 6 divisors (see below), whose sum is σ = 385892444. Its totient is φ = 110254980.

The previous prime is 220509923. The next prime is 220509979. The reversal of 220509964 is 469905022.

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 as a sum of consecutive naturals, namely, 27563742 + ... + 27563749.

Almost surely, 2^220509964 is an apocalyptic number.

It is an amenable number.

220509964 is a deficient number, since it is larger than the sum of its proper divisors (165382480).

220509964 is a wasteful number, since it uses less digits than its factorization.

220509964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55127495 (or 55127493 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 220509964 is about 14849.5779064592. The cubic root of 220509964 is about 604.1471616332.

The spelling of 220509964 in words is "two hundred twenty million, five hundred nine thousand, nine hundred sixty-four".