11867681 has 8 divisors (see below), whose sum is σ = 13661760. Its totient is φ = 10098288.

The previous prime is 11867677. The next prime is 11867693. The reversal of 11867681 is 18676811.

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

It is a cyclic number.

It is not a de Polignac number, because 11867681 - 2² = 11867677 is a prime.

It is a super-2 number, since 2×11867681² = 281683704635522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11867651) 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, 5126 + ... + 7071.

It is an arithmetic number, because the mean of its divisors is an integer number (1707720).

Almost surely, 2^11867681 is an apocalyptic number.

It is an amenable number.

11867681 is a deficient number, since it is larger than the sum of its proper divisors (1794079).

11867681 is a wasteful number, since it uses less digits than its factorization.

11867681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12343.

The product of its digits is 16128, while the sum is 38.

The square root of 11867681 is about 3444.9500722071. The cubic root of 11867681 is about 228.0982507198.

The spelling of 11867681 in words is "eleven million, eight hundred sixty-seven thousand, six hundred eighty-one".