6671923 has 4 divisors (see below), whose sum is σ = 6827128. Its totient is φ = 6516720.

The previous prime is 6671921. The next prime is 6671947. The reversal of 6671923 is 3291766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6671923 - 2¹ = 6671921 is a prime.

It is a Duffinian number.

6671923 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6671921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77538 + ... + 77623.

It is an arithmetic number, because the mean of its divisors is an integer number (1706782).

Almost surely, 2^6671923 is an apocalyptic number.

6671923 is a deficient number, since it is larger than the sum of its proper divisors (155205).

6671923 is a wasteful number, since it uses less digits than its factorization.

6671923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155204.

The product of its digits is 13608, while the sum is 34.

The square root of 6671923 is about 2583.0065814860. The cubic root of 6671923 is about 188.2566567724.

Subtracting from 6671923 its sum of digits (34), we obtain a square (6671889 = 2583²).

The spelling of 6671923 in words is "six million, six hundred seventy-one thousand, nine hundred twenty-three".