689701064858 has 32 divisors (see below), whose sum is σ = 1179734192784. Its totient is φ = 299582272512.

The previous prime is 689701064849. The next prime is 689701064873. The reversal of 689701064858 is 858460107986.

It can be written as a sum of positive squares in 8 ways, for example, as 487585182529 + 202115882329 = 698273^2 + 449573^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 689701064858.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11708816 + ... + 11767572.

Almost surely, 2^689701064858 is an apocalyptic number.

689701064858 is a deficient number, since it is larger than the sum of its proper divisors (490033127926).

689701064858 is a wasteful number, since it uses less digits than its factorization.

689701064858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85346.

The product of its (nonzero) digits is 23224320, while the sum is 62.

The spelling of 689701064858 in words is "six hundred eighty-nine billion, seven hundred one million, sixty-four thousand, eight hundred fifty-eight".