11867647 has 8 divisors (see below), whose sum is σ = 13628160. Its totient is φ = 10220760.

The previous prime is 11867629. The next prime is 11867651. The reversal of 11867647 is 74676811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11867647 - 2¹⁹ = 11343359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11867657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28183 + ... + 28600.

It is an arithmetic number, because the mean of its divisors is an integer number (1703520).

Almost surely, 2^11867647 is an apocalyptic number.

11867647 is a deficient number, since it is larger than the sum of its proper divisors (1760513).

11867647 is a wasteful number, since it uses less digits than its factorization.

11867647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56813.

The product of its digits is 56448, while the sum is 40.

The square root of 11867647 is about 3444.9451374441. The cubic root of 11867647 is about 228.0980328916.

The spelling of 11867647 in words is "eleven million, eight hundred sixty-seven thousand, six hundred forty-seven".