12641895 has 48 divisors (see below), whose sum is σ = 25459200. Its totient is φ = 5683392.

The previous prime is 12641869. The next prime is 12641917. The reversal of 12641895 is 59814621.

12641895 is a `hidden beast` number, since 1 + 2 + 641 + 8 + 9 + 5 = 666.

12641895 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12641895 - 2⁸ = 12641639 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20806 + ... + 21404.

It is an arithmetic number, because the mean of its divisors is an integer number (530400).

Almost surely, 2^12641895 is an apocalyptic number.

12641895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12641895 is an abundant number, since it is smaller than the sum of its proper divisors (12817305).

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

12641895 is a wasteful number, since it uses less digits than its factorization.

12641895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 681 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 12641895 is about 3555.5442621348. The cubic root of 12641895 is about 232.9542973105.

The spelling of 12641895 in words is "twelve million, six hundred forty-one thousand, eight hundred ninety-five".