689435512 has 32 divisors (see below), whose sum is σ = 1332500400. Its totient is φ = 334220544.

The previous prime is 689435491. The next prime is 689435519. The reversal of 689435512 is 215534986.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689435519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39814 + ... + 54442.

Almost surely, 2^689435512 is an apocalyptic number.

It is an amenable number.

689435512 is a deficient number, since it is larger than the sum of its proper divisors (643064888).

689435512 is a wasteful number, since it uses less digits than its factorization.

689435512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14815 (or 14811 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 689435512 is about 26257.1040291956. The cubic root of 689435512 is about 883.4145540443.

The spelling of 689435512 in words is "six hundred eighty-nine million, four hundred thirty-five thousand, five hundred twelve".