12641574 has 64 divisors (see below), whose sum is σ = 30792960. Its totient is φ = 3409920.

The previous prime is 12641567. The next prime is 12641609. The reversal of 12641574 is 47514621.

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, 21022 + ... + 21614.

It is an arithmetic number, because the mean of its divisors is an integer number (481140).

Almost surely, 2^12641574 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12641574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15396480).

12641574 is an abundant number, since it is smaller than the sum of its proper divisors (18151386).

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

12641574 is a wasteful number, since it uses less digits than its factorization.

12641574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645.

The product of its digits is 6720, while the sum is 30.

The square root of 12641574 is about 3555.4991210799. The cubic root of 12641574 is about 232.9523255871.

The spelling of 12641574 in words is "twelve million, six hundred forty-one thousand, five hundred seventy-four".