6687673 has 4 divisors (see below), whose sum is σ = 6697600. Its totient is φ = 6677748.

The previous prime is 6687631. The next prime is 6687689. The reversal of 6687673 is 3767866.

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 6687673 - 2¹³ = 6679481 is a prime.

It is a d-powerful number, because it can be written as 6 + 6³ + 8⁵ + 7⁷ + 6⁶ + 7⁸ + 3⁹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6687623) 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, 3873 + ... + 5326.

It is an arithmetic number, because the mean of its divisors is an integer number (1674400).

Almost surely, 2^6687673 is an apocalyptic number.

It is an amenable number.

6687673 is a deficient number, since it is larger than the sum of its proper divisors (9927).

6687673 is an equidigital number, since it uses as much as digits as its factorization.

6687673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9926.

The product of its digits is 254016, while the sum is 43.

The square root of 6687673 is about 2586.0535570633. The cubic root of 6687673 is about 188.4046756803.

The spelling of 6687673 in words is "six million, six hundred eighty-seven thousand, six hundred seventy-three".