689039476 has 6 divisors (see below), whose sum is σ = 1205819090. Its totient is φ = 344519736.

The previous prime is 689039459. The next prime is 689039489. The reversal of 689039476 is 674930986.

It can be written as a sum of positive squares in only one way, i.e., 371487076 + 317552400 = 19274^2 + 17820^2 .

It is a congruent number.

It is an unprimeable number.

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, 86129931 + ... + 86129938.

Almost surely, 2^689039476 is an apocalyptic number.

It is an amenable number.

689039476 is a deficient number, since it is larger than the sum of its proper divisors (516779614).

689039476 is a wasteful number, since it uses less digits than its factorization.

689039476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172259873 (or 172259871 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 689039476 is about 26249.5614439556. The cubic root of 689039476 is about 883.2453668503.

The spelling of 689039476 in words is "six hundred eighty-nine million, thirty-nine thousand, four hundred seventy-six".