12581671 has 8 divisors (see below), whose sum is σ = 13006224. Its totient is φ = 12163200.

The previous prime is 12581659. The next prime is 12581689. The reversal of 12581671 is 17618521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12581671 - 2¹⁵ = 12548903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12581651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2895 + ... + 5791.

It is an arithmetic number, because the mean of its divisors is an integer number (1625778).

Almost surely, 2^12581671 is an apocalyptic number.

12581671 is a deficient number, since it is larger than the sum of its proper divisors (424553).

12581671 is a wasteful number, since it uses less digits than its factorization.

12581671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041.

The product of its digits is 3360, while the sum is 31.

The square root of 12581671 is about 3547.0651248603. The cubic root of 12581671 is about 232.5837891242.

It can be divided in two parts, 125 and 81671, that added together give a square (81796 = 286²).

The spelling of 12581671 in words is "twelve million, five hundred eighty-one thousand, six hundred seventy-one".