12321606 has 32 divisors (see below), whose sum is σ = 28055808. Its totient is φ = 3571040.

The previous prime is 12321593. The next prime is 12321611. The reversal of 12321606 is 60612321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2541 + ... + 5576.

It is an arithmetic number, because the mean of its divisors is an integer number (876744).

Almost surely, 2^12321606 is an apocalyptic number.

12321606 is an abundant number, since it is smaller than the sum of its proper divisors (15734202).

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

12321606 is a wasteful number, since it uses less digits than its factorization.

12321606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8156.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 12321606 is about 3510.2145233589. The cubic root of 12321606 is about 230.9701053872.

Adding to 12321606 its reverse (60612321), we get a palindrome (72933927).

The spelling of 12321606 in words is "twelve million, three hundred twenty-one thousand, six hundred six".