6673640 has 16 divisors (see below), whose sum is σ = 15015780. Its totient is φ = 2669440.

The previous prime is 6673637. The next prime is 6673687. The reversal of 6673640 is 463766.

It can be written as a sum of positive squares in 2 ways, for example, as 6646084 + 27556 = 2578^2 + 166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6673597 and 6673606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83381 + ... + 83460.

Almost surely, 2^6673640 is an apocalyptic number.

It is an amenable number.

6673640 is an abundant number, since it is smaller than the sum of its proper divisors (8342140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6673640 is a wasteful number, since it uses less digits than its factorization.

6673640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166852 (or 166848 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 6673640 is about 2583.3389247251. The cubic root of 6673640 is about 188.2728044885.

The spelling of 6673640 in words is "six million, six hundred seventy-three thousand, six hundred forty".