220400585 has 8 divisors (see below), whose sum is σ = 270631680. Its totient is φ = 172219824.

The previous prime is 220400581. The next prime is 220400591. The reversal of 220400585 is 585004022.

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

It is a cyclic number.

It is not a de Polignac number, because 220400585 - 2² = 220400581 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220400581) 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, 512345 + ... + 512774.

It is an arithmetic number, because the mean of its divisors is an integer number (33828960).

Almost surely, 2^220400585 is an apocalyptic number.

It is an amenable number.

220400585 is a deficient number, since it is larger than the sum of its proper divisors (50231095).

220400585 is a wasteful number, since it uses less digits than its factorization.

220400585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025167.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 220400585 is about 14845.8945503462. The cubic root of 220400585 is about 604.0472539160.

The spelling of 220400585 in words is "two hundred twenty million, four hundred thousand, five hundred eighty-five".