383285664 has 72 divisors (see below), whose sum is σ = 1119458340. Its totient is φ = 124305408.

The previous prime is 383285659. The next prime is 383285681. The reversal of 383285664 is 466582383.

It is a happy number.

383285664 is a `hidden beast` number, since 3 + 83 + 2 + 8 + 566 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 299013264 + 84272400 = 17292^2 + 9180^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7329 + ... + 28640.

Almost surely, 2^383285664 is an apocalyptic number.

It is an amenable number.

383285664 is an abundant number, since it is smaller than the sum of its proper divisors (736172676).

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

383285664 is a wasteful number, since it uses less digits than its factorization.

383285664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36022 (or 36011 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 383285664 is about 19577.6828046631. The cubic root of 383285664 is about 726.3972508904.

The spelling of 383285664 in words is "three hundred eighty-three million, two hundred eighty-five thousand, six hundred sixty-four".