6449630 has 32 divisors (see below), whose sum is σ = 13413600. Its totient is φ = 2206720.

The previous prime is 6449617. The next prime is 6449659. The reversal of 6449630 is 369446.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 146 + ... + 3594.

It is an arithmetic number, because the mean of its divisors is an integer number (419175).

Almost surely, 2^6449630 is an apocalyptic number.

6449630 is an abundant number, since it is smaller than the sum of its proper divisors (6963970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6449630 is a wasteful number, since it uses less digits than its factorization.

6449630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 6449630 is about 2539.6121751165. The cubic root of 6449630 is about 186.1422390613.

It can be divided in two parts, 64 and 49630, that added together give a palindrome (49694).

The spelling of 6449630 in words is "six million, four hundred forty-nine thousand, six hundred thirty".