12690073 has 4 divisors (see below), whose sum is σ = 13843728. Its totient is φ = 11536420.

The previous prime is 12690071. The next prime is 12690077. The reversal of 12690073 is 37009621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37009621 = 11 ⋅3364511.

It is a cyclic number.

It is not a de Polignac number, because 12690073 - 2¹ = 12690071 is a prime.

It is a super-2 number, since 2×12690073² = 322075905490658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12690071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576811 + ... + 576832.

It is an arithmetic number, because the mean of its divisors is an integer number (3460932).

Almost surely, 2^12690073 is an apocalyptic number.

It is an amenable number.

12690073 is a deficient number, since it is larger than the sum of its proper divisors (1153655).

12690073 is a wasteful number, since it uses less digits than its factorization.

12690073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153654.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 12690073 is about 3562.3128722783. The cubic root of 12690073 is about 233.2498501799.

Adding to 12690073 its reverse (37009621), we get a palindrome (49699694).

The spelling of 12690073 in words is "twelve million, six hundred ninety thousand, seventy-three".