12870165 has 48 divisors (see below), whose sum is σ = 25893504. Its totient is φ = 5343360.

The previous prime is 12870161. The next prime is 12870167. The reversal of 12870165 is 56107821.

It is not a de Polignac number, because 12870165 - 2² = 12870161 is a prime.

It is a super-2 number, since 2×12870165² = 331282294254450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12870161) 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, 12199 + ... + 13211.

It is an arithmetic number, because the mean of its divisors is an integer number (539448).

Almost surely, 2^12870165 is an apocalyptic number.

12870165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12870165 is an abundant number, since it is smaller than the sum of its proper divisors (13023339).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12870165 is a wasteful number, since it uses less digits than its factorization.

12870165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 12870165 is about 3587.5012195120. The cubic root of 12870165 is about 234.3480648157.

Adding to 12870165 its reverse (56107821), we get a palindrome (68977986).

The spelling of 12870165 in words is "twelve million, eight hundred seventy thousand, one hundred sixty-five".