6987489265 has 4 divisors (see below), whose sum is σ = 8384987124. Its totient is φ = 5589991408.

The previous prime is 6987489241. The next prime is 6987489307. The reversal of 6987489265 is 5629847896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4473870769 + 2513618496 = 66887^2 + 50136^2 .

It is a cyclic number.

It is not a de Polignac number, because 6987489265 - 2⁵ = 6987489233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6987489197 and 6987489206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698748922 + ... + 698748931.

It is an arithmetic number, because the mean of its divisors is an integer number (2096246781).

Almost surely, 2^6987489265 is an apocalyptic number.

It is an amenable number.

6987489265 is a deficient number, since it is larger than the sum of its proper divisors (1397497859).

6987489265 is a wasteful number, since it uses less digits than its factorization.

6987489265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397497858.

The product of its digits is 52254720, while the sum is 64.

The square root of 6987489265 is about 83591.2032752251. The cubic root of 6987489265 is about 1911.7908757795.

The spelling of 6987489265 in words is "six billion, nine hundred eighty-seven million, four hundred eighty-nine thousand, two hundred sixty-five".