689396258 has 8 divisors (see below), whose sum is σ = 1051046940. Its totient is φ = 339047280.

The previous prime is 689396251. The next prime is 689396287. The reversal of 689396258 is 852693986.

It can be written as a sum of positive squares in 2 ways, for example, as 651117289 + 38278969 = 25517^2 + 6187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (689396251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2825273 + ... + 2825516.

Almost surely, 2^689396258 is an apocalyptic number.

689396258 is a deficient number, since it is larger than the sum of its proper divisors (361650682).

689396258 is a wasteful number, since it uses less digits than its factorization.

689396258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650852.

The product of its digits is 5598720, while the sum is 56.

The square root of 689396258 is about 26256.3565256111. The cubic root of 689396258 is about 883.3977875677.

The spelling of 689396258 in words is "six hundred eighty-nine million, three hundred ninety-six thousand, two hundred fifty-eight".