6878780 has 12 divisors (see below), whose sum is σ = 14445480. Its totient is φ = 2751504.

The previous prime is 6878777. The next prime is 6878789. The reversal of 6878780 is 878786.

It is a happy number.

It is a super-2 number, since 2×6878780² = 94635228576800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6878789) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 171950 + ... + 171989.

It is an arithmetic number, because the mean of its divisors is an integer number (1203790).

Almost surely, 2^6878780 is an apocalyptic number.

It is an amenable number.

6878780 is an abundant number, since it is smaller than the sum of its proper divisors (7566700).

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

6878780 is a wasteful number, since it uses less digits than its factorization.

6878780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343948 (or 343946 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 44.

The square root of 6878780 is about 2622.7428390904. The cubic root of 6878780 is about 190.1824655266.

The spelling of 6878780 in words is "six million, eight hundred seventy-eight thousand, seven hundred eighty".