6988780 has 24 divisors (see below), whose sum is σ = 15315552. Its totient is φ = 2673792.

The previous prime is 6988777. The next prime is 6988799. The reversal of 6988780 is 878896.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 6988780.

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 7 ways as a sum of consecutive naturals, for example, 7137 + ... + 8056.

It is an arithmetic number, because the mean of its divisors is an integer number (638148).

Almost surely, 2^6988780 is an apocalyptic number.

It is an amenable number.

6988780 is an abundant number, since it is smaller than the sum of its proper divisors (8326772).

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

6988780 is a wasteful number, since it uses less digits than its factorization.

6988780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15225 (or 15223 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 6988780 is about 2643.6300800225. The cubic root of 6988780 is about 191.1908584415.

The spelling of 6988780 in words is "six million, nine hundred eighty-eight thousand, seven hundred eighty".