689319026 has 16 divisors (see below), whose sum is σ = 1194328800. Its totient is φ = 294895680.

The previous prime is 689319023. The next prime is 689319047. The reversal of 689319026 is 620913986.

It is not an unprimeable number, because it can be changed into a prime (689319023) 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 7 ways as a sum of consecutive naturals, for example, 921176 + ... + 921923.

It is an arithmetic number, because the mean of its divisors is an integer number (74645550).

Almost surely, 2^689319026 is an apocalyptic number.

689319026 is a deficient number, since it is larger than the sum of its proper divisors (505009774).

689319026 is a wasteful number, since it uses less digits than its factorization.

689319026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843129.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 689319026 is about 26254.8857548457. The cubic root of 689319026 is about 883.3647977717.

The spelling of 689319026 in words is "six hundred eighty-nine million, three hundred nineteen thousand, twenty-six".