6448634 has 4 divisors (see below), whose sum is σ = 9672954. Its totient is φ = 3224316.

The previous prime is 6448633. The next prime is 6448639. The reversal of 6448634 is 4368446.

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: 4368446 = 2 ⋅2184223.

It can be written as a sum of positive squares in only one way, i.e., 5536609 + 912025 = 2353^2 + 955^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6448594 and 6448603.

It is not an unprimeable number, because it can be changed into a prime (6448633) 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 as a sum of consecutive naturals, namely, 1612157 + ... + 1612160.

Almost surely, 2^6448634 is an apocalyptic number.

6448634 is a deficient number, since it is larger than the sum of its proper divisors (3224320).

6448634 is a wasteful number, since it uses less digits than its factorization.

6448634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224319.

The product of its digits is 55296, while the sum is 35.

The square root of 6448634 is about 2539.4160746124. The cubic root of 6448634 is about 186.1326567434.

The spelling of 6448634 in words is "six million, four hundred forty-eight thousand, six hundred thirty-four".