689596428 has 24 divisors (see below), whose sum is σ = 1633076032. Its totient is φ = 226434384.

The previous prime is 689596421. The next prime is 689596441. The reversal of 689596428 is 824695986.

It is not an unprimeable number, because it can be changed into a prime (689596421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428050 + ... + 429657.

Almost surely, 2^689596428 is an apocalyptic number.

It is an amenable number.

689596428 is an abundant number, since it is smaller than the sum of its proper divisors (943479604).

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

689596428 is a wasteful number, since it uses less digits than its factorization.

689596428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857781 (or 857779 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The square root of 689596428 is about 26260.1680878093. The cubic root of 689596428 is about 883.4832790981.

The spelling of 689596428 in words is "six hundred eighty-nine million, five hundred ninety-six thousand, four hundred twenty-eight".