6649434 has 72 divisors (see below), whose sum is σ = 16432416. Its totient is φ = 1940400.

The previous prime is 6649417. The next prime is 6649441. The reversal of 6649434 is 4349466.

6649434 is a `hidden beast` number, since 6 + 649 + 4 + 3 + 4 = 666.

Its product of digits (62208) is a multiple of the sum of its prime factors (144).

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 35 ways as a sum of consecutive naturals, for example, 93619 + ... + 93689.

It is an arithmetic number, because the mean of its divisors is an integer number (228228).

Almost surely, 2^6649434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6649434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8216208).

6649434 is an abundant number, since it is smaller than the sum of its proper divisors (9782982).

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

6649434 is a wasteful number, since it uses less digits than its factorization.

6649434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 130 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 6649434 is about 2578.6496466174. The cubic root of 6649434 is about 188.0449002458.

Subtracting from 6649434 its reverse (4349466), we obtain a cube (2299968 = 132³).

The spelling of 6649434 in words is "six million, six hundred forty-nine thousand, four hundred thirty-four".