6989646 has 8 divisors (see below), whose sum is σ = 13979304. Its totient is φ = 2329880.

The previous prime is 6989627. The next prime is 6989651. The reversal of 6989646 is 6469896.

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

6989646 is an admirable number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6989595 and 6989604.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 582465 + ... + 582476.

It is an arithmetic number, because the mean of its divisors is an integer number (1747413).

Almost surely, 2^6989646 is an apocalyptic number.

6989646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6989646 is a wasteful number, since it uses less digits than its factorization.

6989646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164946.

The product of its digits is 559872, while the sum is 48.

The square root of 6989646 is about 2643.7938648843. The cubic root of 6989646 is about 191.1987551199.

The spelling of 6989646 in words is "six million, nine hundred eighty-nine thousand, six hundred forty-six".