3681617 has 4 divisors (see below), whose sum is σ = 3767280. Its totient is φ = 3595956.

The previous prime is 3681599. The next prime is 3681619. The reversal of 3681617 is 7161863.

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 3681617 - 2⁶ = 3681553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3681619) 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, 42767 + ... + 42852.

It is an arithmetic number, because the mean of its divisors is an integer number (941820).

Almost surely, 2^3681617 is an apocalyptic number.

It is an amenable number.

3681617 is a deficient number, since it is larger than the sum of its proper divisors (85663).

3681617 is an equidigital number, since it uses as much as digits as its factorization.

3681617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85662.

The product of its digits is 6048, while the sum is 32.

The square root of 3681617 is about 1918.7540227971. The cubic root of 3681617 is about 154.4114622085.

The spelling of 3681617 in words is "three million, six hundred eighty-one thousand, six hundred seventeen".