4387664 has 20 divisors (see below), whose sum is σ = 8871456. Its totient is φ = 2098272.

The previous prime is 4387661. The next prime is 4387673. The reversal of 4387664 is 4667834.

It is a happy number.

It is a super-3 number, since 3×4387664³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4387661) 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, 5594 + ... + 6329.

Almost surely, 2^4387664 is an apocalyptic number.

It is an amenable number.

4387664 is an abundant number, since it is smaller than the sum of its proper divisors (4483792).

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

4387664 is a wasteful number, since it uses less digits than its factorization.

4387664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11954 (or 11948 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 4387664 is about 2094.6751538126. The cubic root of 4387664 is about 163.7109721880.

The spelling of 4387664 in words is "four million, three hundred eighty-seven thousand, six hundred sixty-four".