3661673 has 2 divisors, whose sum is σ = 3661674. Its totient is φ = 3661672.

The previous prime is 3661649. The next prime is 3661703. The reversal of 3661673 is 3761663.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3655744 + 5929 = 1912^2 + 77^2 .

It is a cyclic number.

It is not a de Polignac number, because 3661673 - 2⁸ = 3661417 is a prime.

It is not a weakly prime, because it can be changed into another prime (3661633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1830836 + 1830837.

It is an arithmetic number, because the mean of its divisors is an integer number (1830837).

Almost surely, 2^3661673 is an apocalyptic number.

It is an amenable number.

3661673 is a deficient number, since it is larger than the sum of its proper divisors (1).

3661673 is an equidigital number, since it uses as much as digits as its factorization.

3661673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

The square root of 3661673 is about 1913.5498425701. The cubic root of 3661673 is about 154.1321320584.

It can be divided in two parts, 3661 and 673, that added together give a palindrome (4334).

The spelling of 3661673 in words is "three million, six hundred sixty-one thousand, six hundred seventy-three".