689134573428 has 48 divisors (see below), whose sum is σ = 1862866078080. Its totient is φ = 194198390784.

The previous prime is 689134573427. The next prime is 689134573487. The reversal of 689134573428 is 824375431986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689134573427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56185533 + ... + 56197796.

It is an arithmetic number, because the mean of its divisors is an integer number (38809709960).

Almost surely, 2^689134573428 is an apocalyptic number.

It is an amenable number.

689134573428 is an abundant number, since it is smaller than the sum of its proper divisors (1173731504652).

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

689134573428 is a wasteful number, since it uses less digits than its factorization.

689134573428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112383416 (or 112383414 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 60.

The spelling of 689134573428 in words is "six hundred eighty-nine billion, one hundred thirty-four million, five hundred seventy-three thousand, four hundred twenty-eight".