220666246 has 16 divisors (see below), whose sum is σ = 343203840. Its totient is φ = 106296840.

The previous prime is 220666241. The next prime is 220666279. The reversal of 220666246 is 642666022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220666241) 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 7 ways as a sum of consecutive naturals, for example, 6235 + ... + 21913.

It is an arithmetic number, because the mean of its divisors is an integer number (21450240).

Almost surely, 2^220666246 is an apocalyptic number.

220666246 is a deficient number, since it is larger than the sum of its proper divisors (122537594).

220666246 is a wasteful number, since it uses less digits than its factorization.

220666246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15939.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 220666246 is about 14854.8391441981. The cubic root of 220666246 is about 604.2898536433.

The spelling of 220666246 in words is "two hundred twenty million, six hundred sixty-six thousand, two hundred forty-six".