12867660 has 180 divisors, whose sum is σ = 44640288. Its totient is φ = 3100032.

The previous prime is 12867629. The next prime is 12867661. The reversal of 12867660 is 6676821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12867661) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 273757 + ... + 273803.

Almost surely, 2^12867660 is an apocalyptic number.

12867660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12867660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22320144).

12867660 is an abundant number, since it is smaller than the sum of its proper divisors (31772628).

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

12867660 is a wasteful number, since it uses less digits than its factorization.

12867660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 12867660 is about 3587.1520737209. The cubic root of 12867660 is about 234.3328596237.

12867660 divided by its sum of digits (36) gives a triangular number (357435 = T₈₄₅).

The spelling of 12867660 in words is "twelve million, eight hundred sixty-seven thousand, six hundred sixty".