689509632 has 72 divisors (see below), whose sum is σ = 2097274816. Its totient is φ = 197001216.

The previous prime is 689509631. The next prime is 689509699. The reversal of 689509632 is 236905986.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689509631) 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, 58753 + ... + 69504.

Almost surely, 2^689509632 is an apocalyptic number.

It is an amenable number.

689509632 is an abundant number, since it is smaller than the sum of its proper divisors (1407765184).

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

689509632 is a wasteful number, since it uses less digits than its factorization.

689509632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128283 (or 128269 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 689509632 is about 26258.5154188122. The cubic root of 689509632 is about 883.4462110251.

The spelling of 689509632 in words is "six hundred eighty-nine million, five hundred nine thousand, six hundred thirty-two".