11656749 has 16 divisors (see below), whose sum is σ = 16817472. Its totient is φ = 7139328.

The previous prime is 11656721. The next prime is 11656759. The reversal of 11656749 is 94765611.

It is not a de Polignac number, because 11656749 - 2¹² = 11652653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11656759) 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, 9442 + ... + 10604.

It is an arithmetic number, because the mean of its divisors is an integer number (1051092).

Almost surely, 2^11656749 is an apocalyptic number.

It is an amenable number.

11656749 is a deficient number, since it is larger than the sum of its proper divisors (5160723).

11656749 is a wasteful number, since it uses less digits than its factorization.

11656749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436.

The product of its digits is 45360, while the sum is 39.

The square root of 11656749 is about 3414.1981489070. The cubic root of 11656749 is about 226.7387849622.

It can be divided in two parts, 116 and 56749, that added together give a palindrome (56865).

The spelling of 11656749 in words is "eleven million, six hundred fifty-six thousand, seven hundred forty-nine".