6668474 has 4 divisors (see below), whose sum is σ = 10002714. Its totient is φ = 3334236.

The previous prime is 6668461. The next prime is 6668507. The reversal of 6668474 is 4748666.

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

It can be written as a sum of positive squares in only one way, i.e., 5555449 + 1113025 = 2357^2 + 1055^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1667117 + ... + 1667120.

Almost surely, 2^6668474 is an apocalyptic number.

6668474 is a deficient number, since it is larger than the sum of its proper divisors (3334240).

6668474 is a wasteful number, since it uses less digits than its factorization.

6668474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334239.

The product of its digits is 193536, while the sum is 41.

The square root of 6668474 is about 2582.3388623494. The cubic root of 6668474 is about 188.2242118973.

The spelling of 6668474 in words is "six million, six hundred sixty-eight thousand, four hundred seventy-four".