12671670 has 128 divisors (see below), whose sum is σ = 36495360. Its totient is φ = 2782080.

The previous prime is 12671669. The next prime is 12671677. The reversal of 12671670 is 7617621.

It is a happy number.

12671670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12671677) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 269587 + ... + 269633.

It is an arithmetic number, because the mean of its divisors is an integer number (285120).

Almost surely, 2^12671670 is an apocalyptic number.

12671670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12671670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18247680).

12671670 is an abundant number, since it is smaller than the sum of its proper divisors (23823690).

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

12671670 is a wasteful number, since it uses less digits than its factorization.

12671670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 12671670 is about 3559.7289222636. The cubic root of 12671670 is about 233.1370435359.

The spelling of 12671670 in words is "twelve million, six hundred seventy-one thousand, six hundred seventy".