6443874 has 24 divisors (see below), whose sum is σ = 14479920. Its totient is φ = 2147796.

The previous prime is 6443873. The next prime is 6443893. The reversal of 6443874 is 4783446.

6443874 is a `hidden beast` number, since 644 + 3 + 8 + 7 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (6443873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6144 + ... + 7115.

It is an arithmetic number, because the mean of its divisors is an integer number (603330).

Almost surely, 2^6443874 is an apocalyptic number.

6443874 is an abundant number, since it is smaller than the sum of its proper divisors (8036046).

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

6443874 is a wasteful number, since it uses less digits than its factorization.

6443874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13276 (or 13264 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 6443874 is about 2538.4786782638. The cubic root of 6443874 is about 186.0868480998.

The spelling of 6443874 in words is "six million, four hundred forty-three thousand, eight hundred seventy-four".