11660645 has 4 divisors (see below), whose sum is σ = 13992780. Its totient is φ = 9328512.

The previous prime is 11660641. The next prime is 11660647. The reversal of 11660645 is 54606611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9205156 + 2455489 = 3034^2 + 1567^2 .

It is a cyclic number.

It is not a de Polignac number, because 11660645 - 2² = 11660641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11660641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166060 + ... + 1166069.

It is an arithmetic number, because the mean of its divisors is an integer number (3498195).

Almost surely, 2^11660645 is an apocalyptic number.

It is an amenable number.

11660645 is a deficient number, since it is larger than the sum of its proper divisors (2332135).

11660645 is an equidigital number, since it uses as much as digits as its factorization.

11660645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332134.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 11660645 is about 3414.7686598070. The cubic root of 11660645 is about 226.7640428881.

The spelling of 11660645 in words is "eleven million, six hundred sixty thousand, six hundred forty-five".