689833536 has 56 divisors (see below), whose sum is σ = 2085929280. Its totient is φ = 197094912.

The previous prime is 689833511. The next prime is 689833537. The reversal of 689833536 is 635338986.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (689833537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255291 + ... + 257978.

Almost surely, 2^689833536 is an apocalyptic number.

It is an amenable number.

689833536 is an abundant number, since it is smaller than the sum of its proper divisors (1396095744).

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

689833536 is a wasteful number, since it uses less digits than its factorization.

689833536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513291 (or 513281 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 51.

The square root of 689833536 is about 26264.6822939094. The cubic root of 689833536 is about 883.5845252475.

The spelling of 689833536 in words is "six hundred eighty-nine million, eight hundred thirty-three thousand, five hundred thirty-six".