6909998 has 8 divisors (see below), whose sum is σ = 10419840. Its totient is φ = 3436720.

The previous prime is 6909997. The next prime is 6910027. The reversal of 6909998 is 8999096.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6909997) 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 3 ways as a sum of consecutive naturals, for example, 8663 + ... + 9426.

It is an arithmetic number, because the mean of its divisors is an integer number (1302480).

Almost surely, 2^6909998 is an apocalyptic number.

6909998 is a deficient number, since it is larger than the sum of its proper divisors (3509842).

6909998 is a wasteful number, since it uses less digits than its factorization.

6909998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18282.

The product of its (nonzero) digits is 314928, while the sum is 50.

The square root of 6909998 is about 2628.6875052010. The cubic root of 6909998 is about 190.4697333902.

The spelling of 6909998 in words is "six million, nine hundred nine thousand, nine hundred ninety-eight".