4023664 has 20 divisors (see below), whose sum is σ = 7842256. Its totient is φ = 1999872.

The previous prime is 4023661. The next prime is 4023671. The reversal of 4023664 is 4663204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2437 + ... + 3739.

Almost surely, 2^4023664 is an apocalyptic number.

It is an amenable number.

4023664 is a deficient number, since it is larger than the sum of its proper divisors (3818592).

4023664 is a wasteful number, since it uses less digits than its factorization.

4023664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 4023664 is about 2005.9072760225. The cubic root of 4023664 is about 159.0525253992.

Adding to 4023664 its reverse (4663204), we get a palindrome (8686868).

The spelling of 4023664 in words is "four million, twenty-three thousand, six hundred sixty-four".