6988387 has 8 divisors (see below), whose sum is σ = 8003072. Its totient is φ = 5977800.

The previous prime is 6988379. The next prime is 6988417. The reversal of 6988387 is 7838896.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6988387 - 2³ = 6988379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6988387.

It is not an unprimeable number, because it can be changed into a prime (6988307) 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 7 ways as a sum of consecutive naturals, for example, 5062 + ... + 6292.

It is an arithmetic number, because the mean of its divisors is an integer number (1000384).

Almost surely, 2^6988387 is an apocalyptic number.

6988387 is a deficient number, since it is larger than the sum of its proper divisors (1014685).

6988387 is a wasteful number, since it uses less digits than its factorization.

6988387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049.

The product of its digits is 580608, while the sum is 49.

The square root of 6988387 is about 2643.5557493649. Note that the first 3 decimals coincide. The cubic root of 6988387 is about 191.1872746297.

The spelling of 6988387 in words is "six million, nine hundred eighty-eight thousand, three hundred eighty-seven".