220974549 has 8 divisors (see below), whose sum is σ = 301484832. Its totient is φ = 143890320.

The previous prime is 220974521. The next prime is 220974583. The reversal of 220974549 is 945479022.

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

It is not a de Polignac number, because 220974549 - 2⁷ = 220974421 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220974549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220974349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 856362 + ... + 856619.

It is an arithmetic number, because the mean of its divisors is an integer number (37685604).

Almost surely, 2^220974549 is an apocalyptic number.

It is an amenable number.

220974549 is a deficient number, since it is larger than the sum of its proper divisors (80510283).

220974549 is a wasteful number, since it uses less digits than its factorization.

220974549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713027.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 220974549 is about 14865.2127129079. The cubic root of 220974549 is about 604.5711497645.

The spelling of 220974549 in words is "two hundred twenty million, nine hundred seventy-four thousand, five hundred forty-nine".