220240985 has 16 divisors (see below), whose sum is σ = 277236864. Its totient is φ = 167642112.

The previous prime is 220240973. The next prime is 220240997. The reversal of 220240985 is 589042022.

It is an interprime number because it is at equal distance from previous prime (220240973) and next prime (220240997).

It is a cyclic number.

It is not a de Polignac number, because 220240985 - 2²⁰ = 219192409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17234 + ... + 27156.

It is an arithmetic number, because the mean of its divisors is an integer number (17327304).

Almost surely, 2^220240985 is an apocalyptic number.

It is an amenable number.

220240985 is a deficient number, since it is larger than the sum of its proper divisors (56995879).

220240985 is a wasteful number, since it uses less digits than its factorization.

220240985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10144.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 220240985 is about 14840.5183534808. The cubic root of 220240985 is about 603.9014145852.

The spelling of 220240985 in words is "two hundred twenty million, two hundred forty thousand, nine hundred eighty-five".