689278508048 has 40 divisors (see below), whose sum is σ = 1473284333976. Its totient is φ = 310369305600.

The previous prime is 689278507999. The next prime is 689278508059. The reversal of 689278508048 is 840805872986.

It can be written as a sum of positive squares in 4 ways, for example, as 26543104 + 689251964944 = 5152^2 + 830212^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40404143 + ... + 40421198.

Almost surely, 2^689278508048 is an apocalyptic number.

It is an amenable number.

689278508048 is an abundant number, since it is smaller than the sum of its proper divisors (784005825928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689278508048 is a wasteful number, since it uses less digits than its factorization.

689278508048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80825403 (or 80825397 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 65.

The spelling of 689278508048 in words is "six hundred eighty-nine billion, two hundred seventy-eight million, five hundred eight thousand, forty-eight".