220040686 has 8 divisors (see below), whose sum is σ = 338111424. Its totient is φ = 107336880.

The previous prime is 220040659. The next prime is 220040687. The reversal of 220040686 is 686040022.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220040687) 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 3 ways as a sum of consecutive naturals, for example, 1341630 + ... + 1341793.

It is an arithmetic number, because the mean of its divisors is an integer number (42263928).

Almost surely, 2^220040686 is an apocalyptic number.

220040686 is a deficient number, since it is larger than the sum of its proper divisors (118070738).

220040686 is a wasteful number, since it uses less digits than its factorization.

220040686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683466.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 220040686 is about 14833.7684355662. The cubic root of 220040686 is about 603.7182855801.

The spelling of 220040686 in words is "two hundred twenty million, forty thousand, six hundred eighty-six".