6438546 has 48 divisors (see below), whose sum is σ = 15087384. Its totient is φ = 1976832.

The previous prime is 6438539. The next prime is 6438547. The reversal of 6438546 is 6458346.

6438546 is a `hidden beast` number, since 643 + 8 + 5 + 4 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6426225 + 12321 = 2535^2 + 111^2 .

It is a d-powerful number, because it can be written as 6² + 4⁴ + 3¹² + 8⁵ + 5³ + 4¹¹ + 6⁸ .

It is a self number, because there is not a number n which added to its sum of digits gives 6438546.

It is not an unprimeable number, because it can be changed into a prime (6438547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16020 + ... + 16416.

Almost surely, 2^6438546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6438546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7543692).

6438546 is an abundant number, since it is smaller than the sum of its proper divisors (8648838).

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

6438546 is a wasteful number, since it uses less digits than its factorization.

6438546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 472 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 6438546 is about 2537.4290137854. The cubic root of 6438546 is about 186.0355464494.

The spelling of 6438546 in words is "six million, four hundred thirty-eight thousand, five hundred forty-six".