13467681 has 8 divisors (see below), whose sum is σ = 19952160. Its totient is φ = 8978436.

The previous prime is 13467677. The next prime is 13467691. The reversal of 13467681 is 18676431.

It is not a de Polignac number, because 13467681 - 2² = 13467677 is a prime.

It is a super-2 number, since 2×13467681² = 362756863035522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13467611) 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, 249375 + ... + 249428.

It is an arithmetic number, because the mean of its divisors is an integer number (2494020).

Almost surely, 2^13467681 is an apocalyptic number.

It is an amenable number.

13467681 is a deficient number, since it is larger than the sum of its proper divisors (6484479).

13467681 is an equidigital number, since it uses as much as digits as its factorization.

13467681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498812 (or 498806 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 13467681 is about 3669.8339199479. The cubic root of 13467681 is about 237.9199940578.

The spelling of 13467681 in words is "thirteen million, four hundred sixty-seven thousand, six hundred eighty-one".