689763948971 has 8 divisors (see below), whose sum is σ = 701906080320. Its totient is φ = 677676145608.

The previous prime is 689763948949. The next prime is 689763948983. The reversal of 689763948971 is 179849367986.

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

It is a cyclic number.

It is not a de Polignac number, because 689763948971 - 2¹⁸ = 689763686827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 689763948892 and 689763948901.

It is not an unprimeable number, because it can be changed into a prime (689763948271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13556381 + ... + 13607166.

It is an arithmetic number, because the mean of its divisors is an integer number (87738260040).

Almost surely, 2^689763948971 is an apocalyptic number.

689763948971 is a deficient number, since it is larger than the sum of its proper divisors (12142131349).

689763948971 is a wasteful number, since it uses less digits than its factorization.

689763948971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27163993.

The product of its digits is 987614208, while the sum is 77.

The spelling of 689763948971 in words is "six hundred eighty-nine billion, seven hundred sixty-three million, nine hundred forty-eight thousand, nine hundred seventy-one".