3897688 has 8 divisors (see below), whose sum is σ = 7308180. Its totient is φ = 1948840.

The previous prime is 3897683. The next prime is 3897703. The reversal of 3897688 is 8867983.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243598 + ... + 243613.

Almost surely, 2^3897688 is an apocalyptic number.

It is an amenable number.

3897688 is a deficient number, since it is larger than the sum of its proper divisors (3410492).

3897688 is a wasteful number, since it uses less digits than its factorization.

3897688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487217 (or 487213 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 3897688 is about 1974.2563156794. The cubic root of 3897688 is about 157.3749809947.

The spelling of 3897688 in words is "three million, eight hundred ninety-seven thousand, six hundred eighty-eight".