12663420 has 96 divisors (see below), whose sum is σ = 44222976. Its totient is φ = 2630400.

The previous prime is 12663403. The next prime is 12663433. The reversal of 12663420 is 2436621.

12663420 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

12663420 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3250 + ... + 5990.

It is an arithmetic number, because the mean of its divisors is an integer number (460656).

Almost surely, 2^12663420 is an apocalyptic number.

12663420 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 12663420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22111488).

12663420 is an abundant number, since it is smaller than the sum of its proper divisors (31559556).

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

12663420 is a wasteful number, since it uses less digits than its factorization.

12663420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771 (or 2769 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 12663420 is about 3558.5699374889. The cubic root of 12663420 is about 233.0864372577.

It can be divided in two parts, 126 and 63420, that added together give a triangular number (63546 = T₃₅₆).

The spelling of 12663420 in words is "twelve million, six hundred sixty-three thousand, four hundred twenty".