689877311 has 4 divisors (see below), whose sum is σ = 694271592. Its totient is φ = 685483032.

The previous prime is 689877283. The next prime is 689877343. The reversal of 689877311 is 113778986.

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

It is a cyclic number.

It is not a de Polignac number, because 689877311 - 2¹⁸ = 689615167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 689877311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689877511) 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 3 ways as a sum of consecutive naturals, for example, 2196905 + ... + 2197218.

It is an arithmetic number, because the mean of its divisors is an integer number (173567898).

Almost surely, 2^689877311 is an apocalyptic number.

689877311 is a deficient number, since it is larger than the sum of its proper divisors (4394281).

689877311 is a wasteful number, since it uses less digits than its factorization.

689877311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394280.

The product of its digits is 508032, while the sum is 50.

The square root of 689877311 is about 26265.5156241030. The cubic root of 689877311 is about 883.6032148262.

The spelling of 689877311 in words is "six hundred eighty-nine million, eight hundred seventy-seven thousand, three hundred eleven".