3813657 has 8 divisors (see below), whose sum is σ = 5100480. Its totient is φ = 2534640.

The previous prime is 3813647. The next prime is 3813673. The reversal of 3813657 is 7563183.

It is a happy number.

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

It is not a de Polignac number, because 3813657 - 2⁸ = 3813401 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3813617) 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, 694 + ... + 2847.

It is an arithmetic number, because the mean of its divisors is an integer number (637560).

Almost surely, 2^3813657 is an apocalyptic number.

It is an amenable number.

3813657 is a deficient number, since it is larger than the sum of its proper divisors (1286823).

3813657 is a wasteful number, since it uses less digits than its factorization.

3813657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903.

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

The square root of 3813657 is about 1952.8586738420. The cubic root of 3813657 is about 156.2357956154.

It can be divided in two parts, 38 and 13657, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 3813657 in words is "three million, eight hundred thirteen thousand, six hundred fifty-seven".