6777428 has 24 divisors (see below), whose sum is σ = 13813632. Its totient is φ = 2849184.

The previous prime is 6777413. The next prime is 6777443. The reversal of 6777428 is 8247776.

It is an interprime number because it is at equal distance from previous prime (6777413) and next prime (6777443).

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800 + ... + 3767.

It is an arithmetic number, because the mean of its divisors is an integer number (575568).

Almost surely, 2^6777428 is an apocalyptic number.

It is an amenable number.

6777428 is an abundant number, since it is smaller than the sum of its proper divisors (7036204).

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

6777428 is a wasteful number, since it uses less digits than its factorization.

6777428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4631 (or 4629 counting only the distinct ones).

The product of its digits is 131712, while the sum is 41.

The square root of 6777428 is about 2603.3493810858. The cubic root of 6777428 is about 189.2437901760.

The spelling of 6777428 in words is "six million, seven hundred seventy-seven thousand, four hundred twenty-eight".