220260691 has 16 divisors (see below), whose sum is σ = 259705600. Its totient is φ = 182904480.

The previous prime is 220260683. The next prime is 220260709. The reversal of 220260691 is 196062022.

It is a cyclic number.

It is not a de Polignac number, because 220260691 - 2³ = 220260683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220260631) 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 15 ways as a sum of consecutive naturals, for example, 24760 + ... + 32458.

It is an arithmetic number, because the mean of its divisors is an integer number (16231600).

Almost surely, 2^220260691 is an apocalyptic number.

220260691 is a deficient number, since it is larger than the sum of its proper divisors (39444909).

220260691 is an equidigital number, since it uses as much as digits as its factorization.

220260691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7834.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 220260691 is about 14841.1822642268. The cubic root of 220260691 is about 603.9194253510.

The spelling of 220260691 in words is "two hundred twenty million, two hundred sixty thousand, six hundred ninety-one".