3865633 has 4 divisors (see below), whose sum is σ = 4033728. Its totient is φ = 3697540.

The previous prime is 3865601. The next prime is 3865637. The reversal of 3865633 is 3365683.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3865633 - 2⁵ = 3865601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3865637) 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, 84013 + ... + 84058.

It is an arithmetic number, because the mean of its divisors is an integer number (1008432).

Almost surely, 2^3865633 is an apocalyptic number.

It is an amenable number.

3865633 is a deficient number, since it is larger than the sum of its proper divisors (168095).

3865633 is a wasteful number, since it uses less digits than its factorization.

3865633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168094.

The product of its digits is 38880, while the sum is 34.

The square root of 3865633 is about 1966.1213085667. The cubic root of 3865633 is about 156.9423700204.

The spelling of 3865633 in words is "three million, eight hundred sixty-five thousand, six hundred thirty-three".