6669975 has 24 divisors (see below), whose sum is σ = 11877712. Its totient is φ = 3283200.

The previous prime is 6669973. The next prime is 6669983. The reversal of 6669975 is 5799666.

It is not a de Polignac number, because 6669975 - 2¹ = 6669973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6669973) 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 23 ways as a sum of consecutive naturals, for example, 2446 + ... + 4395.

Almost surely, 2^6669975 is an apocalyptic number.

6669975 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6669975 is a deficient number, since it is larger than the sum of its proper divisors (5207737).

6669975 is a wasteful number, since it uses less digits than its factorization.

6669975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6867 (or 6862 counting only the distinct ones).

The product of its digits is 612360, while the sum is 48.

The square root of 6669975 is about 2582.6294740051. The cubic root of 6669975 is about 188.2383332364.

The spelling of 6669975 in words is "six million, six hundred sixty-nine thousand, nine hundred seventy-five".