12531606 has 8 divisors (see below), whose sum is σ = 25063224. Its totient is φ = 4177200.

The previous prime is 12531593. The next prime is 12531637. The reversal of 12531606 is 60613521.

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

12531606 is an admirable number.

It is a super-2 number, since 2×12531606² = 314082297878472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1044295 + ... + 1044306.

It is an arithmetic number, because the mean of its divisors is an integer number (3132903).

Almost surely, 2^12531606 is an apocalyptic number.

12531606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12531606 is a wasteful number, since it uses less digits than its factorization.

12531606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088606.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 12531606 is about 3540.0008474575. Note that the first 3 decimals coincide. The cubic root of 12531606 is about 232.2748797949.

The spelling of 12531606 in words is "twelve million, five hundred thirty-one thousand, six hundred six".