11650865 has 16 divisors (see below), whose sum is σ = 14946768. Its totient is φ = 8687616.

The previous prime is 11650861. The next prime is 11650867. The reversal of 11650865 is 56805611.

It is a happy number.

11650865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3083536 + 8567329 = 1756^2 + 2927^2 .

It is a cyclic number.

It is not a de Polignac number, because 11650865 - 2² = 11650861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11650861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8999 + ... + 10211.

It is an arithmetic number, because the mean of its divisors is an integer number (934173).

Almost surely, 2^11650865 is an apocalyptic number.

It is an amenable number.

11650865 is a deficient number, since it is larger than the sum of its proper divisors (3295903).

11650865 is a wasteful number, since it uses less digits than its factorization.

11650865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 11650865 is about 3413.3363443997. The cubic root of 11650865 is about 226.7006280812.

The spelling of 11650865 in words is "eleven million, six hundred fifty thousand, eight hundred sixty-five".