6940544 has 64 divisors (see below), whose sum is σ = 15393840. Its totient is φ = 3096576.

The previous prime is 6940513. The next prime is 6940561. The reversal of 6940544 is 4450496.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 6940544.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 71504 + ... + 71600.

Almost surely, 2^6940544 is an apocalyptic number.

6940544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6940544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7696920).

6940544 is an abundant number, since it is smaller than the sum of its proper divisors (8453296).

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

6940544 is a wasteful number, since it uses less digits than its factorization.

6940544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 6940544 is about 2634.4912222287. The cubic root of 6940544 is about 190.7499812483.

The spelling of 6940544 in words is "six million, nine hundred forty thousand, five hundred forty-four".