3643673 has 6 divisors (see below), whose sum is σ = 4005162. Its totient is φ = 3312320.

The previous prime is 3643669. The next prime is 3643681. The reversal of 3643673 is 3763463.

It can be written as a sum of positive squares in only one way, i.e., 3579664 + 64009 = 1892^2 + 253^2 .

It is not a de Polignac number, because 3643673 - 2² = 3643669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3643603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14936 + ... + 15177.

It is an arithmetic number, because the mean of its divisors is an integer number (667527).

Almost surely, 2^3643673 is an apocalyptic number.

It is an amenable number.

3643673 is a deficient number, since it is larger than the sum of its proper divisors (361489).

3643673 is a wasteful number, since it uses less digits than its factorization.

3643673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30135 (or 30124 counting only the distinct ones).

The product of its digits is 27216, while the sum is 32.

The square root of 3643673 is about 1908.8407476791. The cubic root of 3643673 is about 153.8791569005.

The spelling of 3643673 in words is "three million, six hundred forty-three thousand, six hundred seventy-three".