689634112 has 14 divisors (see below), whose sum is σ = 1368492818. Its totient is φ = 344817024.

The previous prime is 689634041. The next prime is 689634119. The reversal of 689634112 is 211436986.

It can be written as a sum of positive squares in only one way, i.e., 656179456 + 33454656 = 25616^2 + 5784^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689634119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5387703 + ... + 5387830.

It is an arithmetic number, because the mean of its divisors is an integer number (97749487).

Almost surely, 2^689634112 is an apocalyptic number.

It is an amenable number.

689634112 is a deficient number, since it is larger than the sum of its proper divisors (678858706).

689634112 is a wasteful number, since it uses less digits than its factorization.

689634112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10775545 (or 10775535 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 689634112 is about 26260.8855905508. The cubic root of 689634112 is about 883.4993718813.

The spelling of 689634112 in words is "six hundred eighty-nine million, six hundred thirty-four thousand, one hundred twelve".