689731793877 has 16 divisors (see below), whose sum is σ = 1051723889280. Its totient is φ = 393868448832.

The previous prime is 689731793867. The next prime is 689731793903. The reversal of 689731793877 is 778397137986.

It is not a de Polignac number, because 689731793877 - 2⁶ = 689731793813 is a prime.

It is a super-2 number, since 2×689731793877² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 689731793799 and 689731793808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689731793857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10968102 + ... + 11030807.

It is an arithmetic number, because the mean of its divisors is an integer number (65732743080).

Almost surely, 2^689731793877 is an apocalyptic number.

It is an amenable number.

689731793877 is a deficient number, since it is larger than the sum of its proper divisors (361992095403).

689731793877 is a wasteful number, since it uses less digits than its factorization.

689731793877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22000412.

The product of its digits is 672126336, while the sum is 75.

The spelling of 689731793877 in words is "six hundred eighty-nine billion, seven hundred thirty-one million, seven hundred ninety-three thousand, eight hundred seventy-seven".