11650985 has 4 divisors (see below), whose sum is σ = 13981188. Its totient is φ = 9320784.

The previous prime is 11650981. The next prime is 11651023. The reversal of 11650985 is 58905611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58905611 = 31 ⋅1900181.

It can be written as a sum of positive squares in 2 ways, for example, as 9078169 + 2572816 = 3013^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 11650985 - 2² = 11650981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11650981) 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 3 ways as a sum of consecutive naturals, for example, 1165094 + ... + 1165103.

It is an arithmetic number, because the mean of its divisors is an integer number (3495297).

Almost surely, 2^11650985 is an apocalyptic number.

It is an amenable number.

11650985 is a deficient number, since it is larger than the sum of its proper divisors (2330203).

11650985 is an equidigital number, since it uses as much as digits as its factorization.

11650985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330202.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 11650985 is about 3413.3539224639. The cubic root of 11650985 is about 226.7014063920.

The spelling of 11650985 in words is "eleven million, six hundred fifty thousand, nine hundred eighty-five".