4143664 has 20 divisors (see below), whose sum is σ = 9175504. Its totient is φ = 1775808.

The previous prime is 4143647. The next prime is 4143673. The reversal of 4143664 is 4663414.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18387 + ... + 18610.

Almost surely, 2^4143664 is an apocalyptic number.

It is an amenable number.

4143664 is an abundant number, since it is smaller than the sum of its proper divisors (5031840).

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

4143664 is a wasteful number, since it uses less digits than its factorization.

4143664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37012 (or 37006 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 4143664 is about 2035.5991746903. The cubic root of 4143664 is about 160.6182330972.

The spelling of 4143664 in words is "four million, one hundred forty-three thousand, six hundred sixty-four".