12661695 has 48 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 6264000.

The previous prime is 12661679. The next prime is 12661699. The reversal of 12661695 is 59616621.

It is not a de Polignac number, because 12661695 - 2⁴ = 12661679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12661699) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50320 + ... + 50570.

It is an arithmetic number, because the mean of its divisors is an integer number (491400).

Almost surely, 2^12661695 is an apocalyptic number.

12661695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12661695 is a deficient number, since it is larger than the sum of its proper divisors (10925505).

12661695 is a wasteful number, since it uses less digits than its factorization.

12661695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 337 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 12661695 is about 3558.3275565917. The cubic root of 12661695 is about 233.0758531668.

The spelling of 12661695 in words is "twelve million, six hundred sixty-one thousand, six hundred ninety-five".