220091065 has 8 divisors (see below), whose sum is σ = 264362760. Its totient is φ = 175903872.

The previous prime is 220091057. The next prime is 220091087. The reversal of 220091065 is 560190022.

It can be written as a sum of positive squares in 4 ways, for example, as 6843456 + 213247609 = 2616^2 + 14603^2 .

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 220091065 - 2³ = 220091057 is a prime.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15244 + ... + 25933.

It is an arithmetic number, because the mean of its divisors is an integer number (33045345).

Almost surely, 2^220091065 is an apocalyptic number.

It is an amenable number.

220091065 is a deficient number, since it is larger than the sum of its proper divisors (44271695).

220091065 is a wasteful number, since it uses less digits than its factorization.

220091065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42251.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 220091065 is about 14835.4664571088. The cubic root of 220091065 is about 603.7643564578.

The spelling of 220091065 in words is "two hundred twenty million, ninety-one thousand, sixty-five".