689632576 has 14 divisors (see below), whose sum is σ = 1368489770. Its totient is φ = 344816256.

The previous prime is 689632571. The next prime is 689632579. The reversal of 689632576 is 675236986.

It can be written as a sum of positive squares in only one way, i.e., 439992576 + 249640000 = 20976^2 + 15800^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689632571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5387691 + ... + 5387818.

Almost surely, 2^689632576 is an apocalyptic number.

It is an amenable number.

689632576 is a deficient number, since it is larger than the sum of its proper divisors (678857194).

689632576 is a wasteful number, since it uses less digits than its factorization.

689632576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10775521 (or 10775511 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The square root of 689632576 is about 26260.8563455193. The cubic root of 689632576 is about 883.4987159509.

The spelling of 689632576 in words is "six hundred eighty-nine million, six hundred thirty-two thousand, five hundred seventy-six".