12471621 has 8 divisors (see below), whose sum is σ = 16648320. Its totient is φ = 8304672.

The previous prime is 12471617. The next prime is 12471631. The reversal of 12471621 is 12617421.

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

It is not a de Polignac number, because 12471621 - 2² = 12471617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12471591 and 12471600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12471601) 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, 1425 + ... + 5193.

It is an arithmetic number, because the mean of its divisors is an integer number (2081040).

Almost surely, 2^12471621 is an apocalyptic number.

It is an amenable number.

12471621 is a deficient number, since it is larger than the sum of its proper divisors (4176699).

12471621 is a wasteful number, since it uses less digits than its factorization.

12471621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875.

The product of its digits is 672, while the sum is 24.

The square root of 12471621 is about 3531.5182287509. The cubic root of 12471621 is about 231.9036770668.

The spelling of 12471621 in words is "twelve million, four hundred seventy-one thousand, six hundred twenty-one".