12609870 has 128 divisors (see below), whose sum is σ = 38707200. Its totient is φ = 2557440.

The previous prime is 12609853. The next prime is 12609881. The reversal of 12609870 is 7890621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84556 + ... + 84704.

It is an arithmetic number, because the mean of its divisors is an integer number (302400).

Almost surely, 2^12609870 is an apocalyptic number.

12609870 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 12609870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19353600).

12609870 is an abundant number, since it is smaller than the sum of its proper divisors (26097330).

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

12609870 is a wasteful number, since it uses less digits than its factorization.

12609870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 12609870 is about 3551.0378764525. The cubic root of 12609870 is about 232.7574209748.

The spelling of 12609870 in words is "twelve million, six hundred nine thousand, eight hundred seventy".