689871677 has 8 divisors (see below), whose sum is σ = 752937120. Its totient is φ = 626864560.

The previous prime is 689871641. The next prime is 689871709. The reversal of 689871677 is 776178986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 689871677 - 2¹⁴ = 689855293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689871277) 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, 12323 + ... + 39135.

It is an arithmetic number, because the mean of its divisors is an integer number (94117140).

Almost surely, 2^689871677 is an apocalyptic number.

It is an amenable number.

689871677 is a deficient number, since it is larger than the sum of its proper divisors (63065443).

689871677 is a wasteful number, since it uses less digits than its factorization.

689871677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29163.

The product of its digits is 7112448, while the sum is 59.

The square root of 689871677 is about 26265.4083729913. The cubic root of 689871677 is about 883.6008094545.

The spelling of 689871677 in words is "six hundred eighty-nine million, eight hundred seventy-one thousand, six hundred seventy-seven".