12006613 has 4 divisors (see below), whose sum is σ = 12638560. Its totient is φ = 11374668.

The previous prime is 12006587. The next prime is 12006619. The reversal of 12006613 is 31660021.

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: 31660021 = 31 ⋅1021291.

It is a cyclic number.

It is not a de Polignac number, because 12006613 - 2²¹ = 9909461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 631927 = 12006613 / (1 + 2 + 0 + 0 + 6 + 6 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12006619) 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, 315945 + ... + 315982.

It is an arithmetic number, because the mean of its divisors is an integer number (3159640).

Almost surely, 2^12006613 is an apocalyptic number.

It is an amenable number.

12006613 is a deficient number, since it is larger than the sum of its proper divisors (631947).

12006613 is an equidigital number, since it uses as much as digits as its factorization.

12006613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631946.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 12006613 is about 3465.0559880037. The cubic root of 12006613 is about 228.9848963170.

Adding to 12006613 its reverse (31660021), we get a palindrome (43666634).

The spelling of 12006613 in words is "twelve million, six thousand, six hundred thirteen".