12621006 has 24 divisors (see below), whose sum is σ = 27565824. Its totient is φ = 4173120.

The previous prime is 12620981. The next prime is 12621017. The reversal of 12621006 is 60012621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 12621006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475 + ... + 5046.

It is an arithmetic number, because the mean of its divisors is an integer number (1148576).

Almost surely, 2^12621006 is an apocalyptic number.

12621006 is an abundant number, since it is smaller than the sum of its proper divisors (14944818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12621006 is a wasteful number, since it uses less digits than its factorization.

12621006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5656 (or 5653 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12621006 is about 3552.6055227115. The cubic root of 12621006 is about 232.8259182183.

Adding to 12621006 its reverse (60012621), we get a palindrome (72633627).

The spelling of 12621006 in words is "twelve million, six hundred twenty-one thousand, six".