6628474 has 4 divisors (see below), whose sum is σ = 9942714. Its totient is φ = 3314236.

The previous prime is 6628423. The next prime is 6628477. The reversal of 6628474 is 4748266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4748266 = 2 ⋅2374133.

It can be written as a sum of positive squares in only one way, i.e., 3583449 + 3045025 = 1893^2 + 1745^2 .

It is not an unprimeable number, because it can be changed into a prime (6628477) by changing a digit.

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, 1657117 + ... + 1657120.

Almost surely, 2^6628474 is an apocalyptic number.

6628474 is a deficient number, since it is larger than the sum of its proper divisors (3314240).

6628474 is a wasteful number, since it uses less digits than its factorization.

6628474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314239.

The product of its digits is 64512, while the sum is 37.

The square root of 6628474 is about 2574.5822962182. The cubic root of 6628474 is about 187.8471104946.

The spelling of 6628474 in words is "six million, six hundred twenty-eight thousand, four hundred seventy-four".