6989770 has 8 divisors (see below), whose sum is σ = 12581604. Its totient is φ = 2795904.

The previous prime is 6989761. The next prime is 6989791. The reversal of 6989770 is 779896.

6989770 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in 2 ways, for example, as 6335289 + 654481 = 2517^2 + 809^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 6989770.

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, 349479 + ... + 349498.

Almost surely, 2^6989770 is an apocalyptic number.

6989770 is a deficient number, since it is larger than the sum of its proper divisors (5591834).

6989770 is a wasteful number, since it uses less digits than its factorization.

6989770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698984.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 6989770 is about 2643.8173159279. The cubic root of 6989770 is about 191.1998857687.

The spelling of 6989770 in words is "six million, nine hundred eighty-nine thousand, seven hundred seventy".