12690085 has 4 divisors (see below), whose sum is σ = 15228108. Its totient is φ = 10152064.

The previous prime is 12690077. The next prime is 12690103. The reversal of 12690085 is 58009621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1285956 + 11404129 = 1134^2 + 3377^2 .

It is a cyclic number.

It is not a de Polignac number, because 12690085 - 2³ = 12690077 is a prime.

It is a super-2 number, since 2×12690085² = 322076514614450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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, 1269004 + ... + 1269013.

It is an arithmetic number, because the mean of its divisors is an integer number (3807027).

Almost surely, 2^12690085 is an apocalyptic number.

It is an amenable number.

12690085 is a deficient number, since it is larger than the sum of its proper divisors (2538023).

12690085 is an equidigital number, since it uses as much as digits as its factorization.

12690085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538022.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 12690085 is about 3562.3145565769. The cubic root of 12690085 is about 233.2499237019.

The spelling of 12690085 in words is "twelve million, six hundred ninety thousand, eighty-five".