12646998 has 72 divisors (see below), whose sum is σ = 34358688. Its totient is φ = 3332448.

The previous prime is 12646981. The next prime is 12647003. The reversal of 12646998 is 89964621.

It is a happy number.

12646998 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10915 + ... + 12017.

It is an arithmetic number, because the mean of its divisors is an integer number (477204).

Almost surely, 2^12646998 is an apocalyptic number.

12646998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12646998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17179344).

12646998 is an abundant number, since it is smaller than the sum of its proper divisors (21711690).

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

12646998 is a wasteful number, since it uses less digits than its factorization.

12646998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1128 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 12646998 is about 3556.2618013864. The cubic root of 12646998 is about 232.9856377033.

The spelling of 12646998 in words is "twelve million, six hundred forty-six thousand, nine hundred ninety-eight".