220685975 has 12 divisors (see below), whose sum is σ = 274487640. Its totient is φ = 176008800.

The previous prime is 220685957. The next prime is 220685981. The reversal of 220685975 is 579586022.

It is not a de Polignac number, because 220685975 - 2⁸ = 220685719 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5060 + ... + 21609.

It is an arithmetic number, because the mean of its divisors is an integer number (22873970).

Almost surely, 2^220685975 is an apocalyptic number.

220685975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

220685975 is a deficient number, since it is larger than the sum of its proper divisors (53801665).

220685975 is a wasteful number, since it uses less digits than its factorization.

220685975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27010 (or 27005 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 220685975 is about 14855.5031890542. The cubic root of 220685975 is about 604.3078622566.

The spelling of 220685975 in words is "two hundred twenty million, six hundred eighty-five thousand, nine hundred seventy-five".