689589729274 has 16 divisors (see below), whose sum is σ = 1098685750248. Its totient is φ = 323489108992.

The previous prime is 689589729217. The next prime is 689589729313. The reversal of 689589729274 is 472927985986.

It can be written as a sum of positive squares in 4 ways, for example, as 511357998649 + 178231730625 = 715093^2 + 422175^2 .

It is a super-2 number, since 2×689589729274² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 689589729274.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 31979839 + ... + 32001394.

Almost surely, 2^689589729274 is an apocalyptic number.

689589729274 is a deficient number, since it is larger than the sum of its proper divisors (409096020974).

689589729274 is a wasteful number, since it uses less digits than its factorization.

689589729274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63981569.

The product of its digits is 1097349120, while the sum is 76.

The spelling of 689589729274 in words is "six hundred eighty-nine billion, five hundred eighty-nine million, seven hundred twenty-nine thousand, two hundred seventy-four".