6780356 has 18 divisors (see below), whose sum is σ = 13043310. Its totient is φ = 3081760.

The previous prime is 6780329. The next prime is 6780379. The reversal of 6780356 is 6530876.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6400900 + 379456 = 2530^2 + 616^2 .

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 5 ways as a sum of consecutive naturals, for example, 6521 + ... + 7488.

Almost surely, 2^6780356 is an apocalyptic number.

It is an amenable number.

6780356 is a deficient number, since it is larger than the sum of its proper divisors (6262954).

6780356 is a wasteful number, since it uses less digits than its factorization.

6780356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14035 (or 14022 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 6780356 is about 2603.9116728491. The cubic root of 6780356 is about 189.2710387646.

The spelling of 6780356 in words is "six million, seven hundred eighty thousand, three hundred fifty-six".