3646673 has 4 divisors (see below), whose sum is σ = 3805248. Its totient is φ = 3488100.

The previous prime is 3646661. The next prime is 3646681. The reversal of 3646673 is 3766463.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3766463 = 1543 ⋅2441.

It is a cyclic number.

It is not a de Polignac number, because 3646673 - 2¹² = 3642577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3646603) 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, 79253 + ... + 79298.

It is an arithmetic number, because the mean of its divisors is an integer number (951312).

Almost surely, 2^3646673 is an apocalyptic number.

It is an amenable number.

3646673 is a deficient number, since it is larger than the sum of its proper divisors (158575).

3646673 is a wasteful number, since it uses less digits than its factorization.

3646673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158574.

The product of its digits is 54432, while the sum is 35.

The square root of 3646673 is about 1909.6264032527. The cubic root of 3646673 is about 153.9213771942.

The spelling of 3646673 in words is "three million, six hundred forty-six thousand, six hundred seventy-three".