3857664 has 36 divisors (see below), whose sum is σ = 10269056. Its totient is φ = 1285632.

The previous prime is 3857663. The next prime is 3857681. The reversal of 3857664 is 4667583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3857663) 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, 1744 + ... + 3279.

Almost surely, 2^3857664 is an apocalyptic number.

It is an amenable number.

3857664 is an abundant number, since it is smaller than the sum of its proper divisors (6411392).

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

3857664 is an equidigital number, since it uses as much as digits as its factorization.

3857664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042 (or 5028 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 3857664 is about 1964.0936841200. The cubic root of 3857664 is about 156.8344502952.

The spelling of 3857664 in words is "three million, eight hundred fifty-seven thousand, six hundred sixty-four".