12621075 has 12 divisors (see below), whose sum is σ = 20866968. Its totient is φ = 6731200.

The previous prime is 12621067. The next prime is 12621109. The reversal of 12621075 is 57012621.

It is not a de Polignac number, because 12621075 - 2³ = 12621067 is a prime.

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, 84066 + ... + 84215.

It is an arithmetic number, because the mean of its divisors is an integer number (1738914).

Almost surely, 2^12621075 is an apocalyptic number.

12621075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12621075 is a deficient number, since it is larger than the sum of its proper divisors (8245893).

12621075 is a wasteful number, since it uses less digits than its factorization.

12621075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168294 (or 168289 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 12621075 is about 3552.6152338805. The cubic root of 12621075 is about 232.8263425098.

Adding to 12621075 its reverse (57012621), we get a palindrome (69633696).

It can be divided in two parts, 12 and 621075, that multiplied together give a square (7452900 = 2730²).

The spelling of 12621075 in words is "twelve million, six hundred twenty-one thousand, seventy-five".