6634478 has 4 divisors (see below), whose sum is σ = 9951720. Its totient is φ = 3317238.

The previous prime is 6634469. The next prime is 6634517. The reversal of 6634478 is 8744366.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8744366 = 2 ⋅4372183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1658618 + ... + 1658621.

It is an arithmetic number, because the mean of its divisors is an integer number (2487930).

Almost surely, 2^6634478 is an apocalyptic number.

6634478 is a deficient number, since it is larger than the sum of its proper divisors (3317242).

6634478 is a wasteful number, since it uses less digits than its factorization.

6634478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317241.

The product of its digits is 96768, while the sum is 38.

The square root of 6634478 is about 2575.7480466847. The cubic root of 6634478 is about 187.9038100052.

The spelling of 6634478 in words is "six million, six hundred thirty-four thousand, four hundred seventy-eight".