12497681 has 8 divisors (see below), whose sum is σ = 14744064. Its totient is φ = 10366560.

The previous prime is 12497677. The next prime is 12497713. The reversal of 12497681 is 18679421.

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 12497681 - 2² = 12497677 is a prime.

It is a super-2 number, since 2×12497681² = 312384060755522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12497621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28580 + ... + 29013.

It is an arithmetic number, because the mean of its divisors is an integer number (1843008).

Almost surely, 2^12497681 is an apocalyptic number.

It is an amenable number.

12497681 is a deficient number, since it is larger than the sum of its proper divisors (2246383).

12497681 is an equidigital number, since it uses as much as digits as its factorization.

12497681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57631.

The product of its digits is 24192, while the sum is 38.

The square root of 12497681 is about 3535.2059345956. The cubic root of 12497681 is about 232.0650890004.

The spelling of 12497681 in words is "twelve million, four hundred ninety-seven thousand, six hundred eighty-one".