3872686 has 4 divisors (see below), whose sum is σ = 5809032. Its totient is φ = 1936342.

The previous prime is 3872681. The next prime is 3872731. The reversal of 3872686 is 6862783.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3872681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968170 + ... + 968173.

It is an arithmetic number, because the mean of its divisors is an integer number (1452258).

Almost surely, 2^3872686 is an apocalyptic number.

3872686 is a deficient number, since it is larger than the sum of its proper divisors (1936346).

3872686 is a wasteful number, since it uses less digits than its factorization.

3872686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936345.

The product of its digits is 96768, while the sum is 40.

The square root of 3872686 is about 1967.9141241426. The cubic root of 3872686 is about 157.0377612120.

The spelling of 3872686 in words is "three million, eight hundred seventy-two thousand, six hundred eighty-six".