3870635 has 4 divisors (see below), whose sum is σ = 4644768. Its totient is φ = 3096504.

The previous prime is 3870631. The next prime is 3870649. The reversal of 3870635 is 5360783.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3870635 - 2² = 3870631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3870631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387059 + ... + 387068.

It is an arithmetic number, because the mean of its divisors is an integer number (1161192).

Almost surely, 2^3870635 is an apocalyptic number.

3870635 is a deficient number, since it is larger than the sum of its proper divisors (774133).

3870635 is an equidigital number, since it uses as much as digits as its factorization.

3870635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774132.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 3870635 is about 1967.3929449909. The cubic root of 3870635 is about 157.0100335725.

The spelling of 3870635 in words is "three million, eight hundred seventy thousand, six hundred thirty-five".