6989920 has 72 divisors (see below), whose sum is σ = 19114704. Its totient is φ = 2366208.

The previous prime is 6989869. The next prime is 6989921. The reversal of 6989920 is 299896.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6989921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88441 + ... + 88519.

It is an arithmetic number, because the mean of its divisors is an integer number (265482).

Almost surely, 2^6989920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6989920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9557352).

6989920 is an abundant number, since it is smaller than the sum of its proper divisors (12124784).

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

6989920 is an equidigital number, since it uses as much as digits as its factorization.

6989920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 6989920 is about 2643.8456838477. The cubic root of 6989920 is about 191.2012534712.

The spelling of 6989920 in words is "six million, nine hundred eighty-nine thousand, nine hundred twenty".