3868647 has 16 divisors (see below), whose sum is σ = 5516160. Its totient is φ = 2404512.

The previous prime is 3868619. The next prime is 3868649. The reversal of 3868647 is 7468683.

It is not a de Polignac number, because 3868647 - 2¹⁰ = 3867623 is a prime.

It is a super-2 number, since 2×3868647² = 29932859221218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3868599 and 3868608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3868649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3313 + ... + 4325.

It is an arithmetic number, because the mean of its divisors is an integer number (344760).

Almost surely, 2^3868647 is an apocalyptic number.

3868647 is a deficient number, since it is larger than the sum of its proper divisors (1647513).

3868647 is a wasteful number, since it uses less digits than its factorization.

3868647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102.

The product of its digits is 193536, while the sum is 42.

The square root of 3868647 is about 1966.8876429527. The cubic root of 3868647 is about 156.9831482853.

The spelling of 3868647 in words is "three million, eight hundred sixty-eight thousand, six hundred forty-seven".