3870646 has 16 divisors (see below), whose sum is σ = 6406848. Its totient is φ = 1742400.

The previous prime is 3870631. The next prime is 3870649. The reversal of 3870646 is 6460783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750 + ... + 2881.

It is an arithmetic number, because the mean of its divisors is an integer number (400428).

Almost surely, 2^3870646 is an apocalyptic number.

3870646 is a deficient number, since it is larger than the sum of its proper divisors (2536202).

3870646 is a wasteful number, since it uses less digits than its factorization.

3870646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 3870646 is about 1967.3957405667. The cubic root of 3870646 is about 157.0101823085.

The spelling of 3870646 in words is "three million, eight hundred seventy thousand, six hundred forty-six".