3875631 has 4 divisors (see below), whose sum is σ = 5167512. Its totient is φ = 2583752.

The previous prime is 3875629. The next prime is 3875653. The reversal of 3875631 is 1365783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1365783 = 3 ⋅455261.

It is a cyclic number.

It is not a de Polignac number, because 3875631 - 2¹ = 3875629 is a prime.

It is a super-2 number, since 2×3875631² = 30041031296322, which contains 22 as substring.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3875592 and 3875601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3875671) 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 in 3 ways as a sum of consecutive naturals, for example, 645936 + ... + 645941.

It is an arithmetic number, because the mean of its divisors is an integer number (1291878).

Almost surely, 2^3875631 is an apocalyptic number.

3875631 is a deficient number, since it is larger than the sum of its proper divisors (1291881).

3875631 is a wasteful number, since it uses less digits than its factorization.

3875631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291880.

The product of its digits is 15120, while the sum is 33.

The square root of 3875631 is about 1968.6622361390. The cubic root of 3875631 is about 157.0775577964.

The spelling of 3875631 in words is "three million, eight hundred seventy-five thousand, six hundred thirty-one".