689778239359 has 32 divisors (see below), whose sum is σ = 829171008000. Its totient is φ = 566421672960.

The previous prime is 689778239323. The next prime is 689778239363. The reversal of 689778239359 is 953932877986.

It is not a de Polignac number, because 689778239359 - 2¹³ = 689778231167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689770239359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1275367 + ... + 1733815.

It is an arithmetic number, because the mean of its divisors is an integer number (25911594000).

Almost surely, 2^689778239359 is an apocalyptic number.

689778239359 is a deficient number, since it is larger than the sum of its proper divisors (139392768641).

689778239359 is a wasteful number, since it uses less digits than its factorization.

689778239359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458815.

The product of its digits is 1234517760, while the sum is 76.

The spelling of 689778239359 in words is "six hundred eighty-nine billion, seven hundred seventy-eight million, two hundred thirty-nine thousand, three hundred fifty-nine".