6801988 has 18 divisors (see below), whose sum is σ = 12128298. Its totient is φ = 3337920.

The previous prime is 6801983. The next prime is 6802001. The reversal of 6801988 is 8891086.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 324 + 6801664 = 18^2 + 2608^2 .

It is a super-5 number, since 5×6801988⁵ (a number of 35 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6801988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6801983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14656 + ... + 15112.

Almost surely, 2^6801988 is an apocalyptic number.

It is an amenable number.

6801988 is a deficient number, since it is larger than the sum of its proper divisors (5326310).

6801988 is a wasteful number, since it uses less digits than its factorization.

6801988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 6801988 is about 2608.0621158247. The cubic root of 6801988 is about 189.4721080820.

The spelling of 6801988 in words is "six million, eight hundred one thousand, nine hundred eighty-eight".