6778548 has 72 divisors (see below), whose sum is σ = 20139392. Its totient is φ = 1881792.

The previous prime is 6778543. The next prime is 6778559. The reversal of 6778548 is 8458776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8961 + ... + 9687.

Almost surely, 2^6778548 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6778548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10069696).

6778548 is an abundant number, since it is smaller than the sum of its proper divisors (13360844).

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

6778548 is a wasteful number, since it uses less digits than its factorization.

6778548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 776 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 6778548 is about 2603.5644797085. The cubic root of 6778548 is about 189.2542140600.

The spelling of 6778548 in words is "six million, seven hundred seventy-eight thousand, five hundred forty-eight".