689628023 has 16 divisors (see below), whose sum is σ = 811869696. Its totient is φ = 573501600.

The previous prime is 689628019. The next prime is 689628029. The reversal of 689628023 is 320826986.

It is not a de Polignac number, because 689628023 - 2² = 689628019 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 (689628029) 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 15 ways as a sum of consecutive naturals, for example, 37865 + ... + 53037.

It is an arithmetic number, because the mean of its divisors is an integer number (50741856).

Almost surely, 2^689628023 is an apocalyptic number.

689628023 is a deficient number, since it is larger than the sum of its proper divisors (122241673).

689628023 is a wasteful number, since it uses less digits than its factorization.

689628023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15374.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 689628023 is about 26260.7696574186. The cubic root of 689628023 is about 883.4967716409.

The spelling of 689628023 in words is "six hundred eighty-nine million, six hundred twenty-eight thousand, twenty-three".