689095591090 has 48 divisors (see below), whose sum is σ = 1320158990664. Its totient is φ = 258925721600.

The previous prime is 689095591069. The next prime is 689095591091. The reversal of 689095591090 is 90195590986.

It can be written as a sum of positive squares in 12 ways, for example, as 98870626969 + 590224964121 = 314437^2 + 768261^2 .

It is not an unprimeable number, because it can be changed into a prime (689095591091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1276860 + ... + 1734520.

Almost surely, 2^689095591090 is an apocalyptic number.

689095591090 is a deficient number, since it is larger than the sum of its proper divisors (631063399574).

689095591090 is a wasteful number, since it uses less digits than its factorization.

689095591090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458223 (or 458206 counting only the distinct ones).

The product of its (nonzero) digits is 7873200, while the sum is 61.

The spelling of 689095591090 in words is "six hundred eighty-nine billion, ninety-five million, five hundred ninety-one thousand, ninety".