6889988 has 18 divisors (see below), whose sum is σ = 14026446. Its totient is φ = 2952768.

The previous prime is 6889969. The next prime is 6889997. The reversal of 6889988 is 8899886.

It can be written as a sum of positive squares in only one way, i.e., 3678724 + 3211264 = 1918^2 + 1792^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17381 + ... + 17772.

It is an arithmetic number, because the mean of its divisors is an integer number (779247).

Almost surely, 2^6889988 is an apocalyptic number.

It is an amenable number.

6889988 is an abundant number, since it is smaller than the sum of its proper divisors (7136458).

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

6889988 is a wasteful number, since it uses less digits than its factorization.

6889988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35171 (or 35162 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 56.

The square root of 6889988 is about 2624.8786638624. The cubic root of 6889988 is about 190.2857012955.

The spelling of 6889988 in words is "six million, eight hundred eighty-nine thousand, nine hundred eighty-eight".