12861650 has 24 divisors (see below), whose sum is σ = 24266304. Its totient is φ = 5070800.

The previous prime is 12861637. The next prime is 12861701. The reversal of 12861650 is 5616821.

It is a happy number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1739 + ... + 5361.

It is an arithmetic number, because the mean of its divisors is an integer number (1011096).

Almost surely, 2^12861650 is an apocalyptic number.

12861650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12861650 is a deficient number, since it is larger than the sum of its proper divisors (11404654).

12861650 is a wasteful number, since it uses less digits than its factorization.

12861650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706 (or 3701 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12861650 is about 3586.3142639763. The cubic root of 12861650 is about 234.2963712540.

The spelling of 12861650 in words is "twelve million, eight hundred sixty-one thousand, six hundred fifty".