689676127 has 12 divisors (see below), whose sum is σ = 828158016. Its totient is φ = 572080320.

The previous prime is 689676107. The next prime is 689676139. The reversal of 689676127 is 721676986.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-689676127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689676107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225498 + ... + 228535.

It is an arithmetic number, because the mean of its divisors is an integer number (69013168).

Almost surely, 2^689676127 is an apocalyptic number.

689676127 is a deficient number, since it is larger than the sum of its proper divisors (138481889).

689676127 is a wasteful number, since it uses less digits than its factorization.

689676127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454078 (or 454071 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 52.

The square root of 689676127 is about 26261.6855323492. The cubic root of 689676127 is about 883.5173135075.

The spelling of 689676127 in words is "six hundred eighty-nine million, six hundred seventy-six thousand, one hundred twenty-seven".