12613771 has 4 divisors (see below), whose sum is σ = 12621352. Its totient is φ = 12606192.

The previous prime is 12613721. The next prime is 12613823. The reversal of 12613771 is 17731621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12613771 - 2¹⁷ = 12482699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12613721) 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, 90 + ... + 5023.

It is an arithmetic number, because the mean of its divisors is an integer number (3155338).

Almost surely, 2^12613771 is an apocalyptic number.

12613771 is a deficient number, since it is larger than the sum of its proper divisors (7581).

12613771 is an equidigital number, since it uses as much as digits as its factorization.

12613771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580.

The product of its digits is 1764, while the sum is 28.

The square root of 12613771 is about 3551.5871100115. The cubic root of 12613771 is about 232.7814205108.

The spelling of 12613771 in words is "twelve million, six hundred thirteen thousand, seven hundred seventy-one".