11636765 has 12 divisors (see below), whose sum is σ = 16244316. Its totient is φ = 7979328.

The previous prime is 11636741. The next prime is 11636771. The reversal of 11636765 is 56763611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7958041 + 3678724 = 2821^2 + 1918^2 .

It is not a de Polignac number, because 11636765 - 2¹⁶ = 11571229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23504 + ... + 23993.

It is an arithmetic number, because the mean of its divisors is an integer number (1353693).

Almost surely, 2^11636765 is an apocalyptic number.

It is an amenable number.

11636765 is a deficient number, since it is larger than the sum of its proper divisors (4607551).

11636765 is an equidigital number, since it uses as much as digits as its factorization.

11636765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47516 (or 47509 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 11636765 is about 3411.2702912552. The cubic root of 11636765 is about 226.6091393321.

The spelling of 11636765 in words is "eleven million, six hundred thirty-six thousand, seven hundred sixty-five".