11742647 has 4 divisors (see below), whose sum is σ = 13420176. Its totient is φ = 10065120.

The previous prime is 11742641. The next prime is 11742649. The reversal of 11742647 is 74624711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74624711 = 7 ⋅10660673.

It is a cyclic number.

It is not a de Polignac number, because 11742647 - 2⁸ = 11742391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11742641) 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, 838754 + ... + 838767.

It is an arithmetic number, because the mean of its divisors is an integer number (3355044).

Almost surely, 2^11742647 is an apocalyptic number.

11742647 is a deficient number, since it is larger than the sum of its proper divisors (1677529).

11742647 is an equidigital number, since it uses as much as digits as its factorization.

11742647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677528.

The product of its digits is 9408, while the sum is 32.

The square root of 11742647 is about 3426.7545870692. The cubic root of 11742647 is about 227.2943647618.

The spelling of 11742647 in words is "eleven million, seven hundred forty-two thousand, six hundred forty-seven".