6448646 has 8 divisors (see below), whose sum is σ = 9809424. Its totient is φ = 3178840.

The previous prime is 6448639. The next prime is 6448681. The reversal of 6448646 is 6468446.

6448646 is nontrivially palindromic in base 7.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22565 + ... + 22848.

It is an arithmetic number, because the mean of its divisors is an integer number (1226178).

Almost surely, 2^6448646 is an apocalyptic number.

6448646 is a deficient number, since it is larger than the sum of its proper divisors (3360778).

6448646 is a wasteful number, since it uses less digits than its factorization.

6448646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45486.

The product of its digits is 110592, while the sum is 38.

The square root of 6448646 is about 2539.4184373592. The cubic root of 6448646 is about 186.1327721989.

The spelling of 6448646 in words is "six million, four hundred forty-eight thousand, six hundred forty-six".