12613761 has 6 divisors (see below), whose sum is σ = 18219890. Its totient is φ = 8409168.

The previous prime is 12613721. The next prime is 12613823. The reversal of 12613761 is 16731621.

It can be written as a sum of positive squares in only one way, i.e., 12383361 + 230400 = 3519^2 + 480^2 .

It is not a de Polignac number, because 12613761 - 2¹¹ = 12611713 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 5 ways as a sum of consecutive naturals, for example, 700756 + ... + 700773.

Almost surely, 2^12613761 is an apocalyptic number.

It is an amenable number.

12613761 is a deficient number, since it is larger than the sum of its proper divisors (5606129).

12613761 is a wasteful number, since it uses less digits than its factorization.

12613761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401535 (or 1401532 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12613761 is about 3551.5857021899. The cubic root of 12613761 is about 232.7813589956.

The spelling of 12613761 in words is "twelve million, six hundred thirteen thousand, seven hundred sixty-one".