3865618 has 8 divisors (see below), whose sum is σ = 5812848. Its totient is φ = 1928004.

The previous prime is 3865601. The next prime is 3865637. The reversal of 3865618 is 8165683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296 + ... + 3067.

It is an arithmetic number, because the mean of its divisors is an integer number (726606).

Almost surely, 2^3865618 is an apocalyptic number.

3865618 is a deficient number, since it is larger than the sum of its proper divisors (1947230).

3865618 is a wasteful number, since it uses less digits than its factorization.

3865618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808.

The product of its digits is 34560, while the sum is 37.

The square root of 3865618 is about 1966.1174939459. The cubic root of 3865618 is about 156.9421670232.

It can be divided in two parts, 38 and 65618, that added together give a palindrome (65656).

The spelling of 3865618 in words is "three million, eight hundred sixty-five thousand, six hundred eighteen".