11772665 has 16 divisors (see below), whose sum is σ = 14853888. Its totient is φ = 8940096.

The previous prime is 11772613. The next prime is 11772689. The reversal of 11772665 is 56627711.

It is a cyclic number.

It is not a de Polignac number, because 11772665 - 2⁶ = 11772601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18899 + ... + 19511.

It is an arithmetic number, because the mean of its divisors is an integer number (928368).

Almost surely, 2^11772665 is an apocalyptic number.

It is an amenable number.

11772665 is a deficient number, since it is larger than the sum of its proper divisors (3081223).

11772665 is a wasteful number, since it uses less digits than its factorization.

11772665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808.

The product of its digits is 17640, while the sum is 35.

The square root of 11772665 is about 3431.1317374884. The cubic root of 11772665 is about 227.4878792399.

The spelling of 11772665 in words is "eleven million, seven hundred seventy-two thousand, six hundred sixty-five".