689696488 has 16 divisors (see below), whose sum is σ = 1392656580. Its totient is φ = 318321408.

The previous prime is 689696431. The next prime is 689696507. The reversal of 689696488 is 884696986.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 689692644 + 3844 = 26262^2 + 62^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3315745 + ... + 3315952.

Almost surely, 2^689696488 is an apocalyptic number.

It is an amenable number.

689696488 is an abundant number, since it is smaller than the sum of its proper divisors (702960092).

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

689696488 is a wasteful number, since it uses less digits than its factorization.

689696488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631716 (or 6631712 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 64.

The square root of 689696488 is about 26262.0731854894. The cubic root of 689696488 is about 883.5260079842.

It can be divided in two parts, 68969 and 6488, that added together give a palindrome (75457).

The spelling of 689696488 in words is "six hundred eighty-nine million, six hundred ninety-six thousand, four hundred eighty-eight".