689055446 has 8 divisors (see below), whose sum is σ = 1034783424. Its totient is φ = 344127640.

The previous prime is 689055439. The next prime is 689055469. The reversal of 689055446 is 644550986.

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

It is a self number, because there is not a number n which added to its sum of digits gives 689055446.

It is a congruent number.

It is an unprimeable number.

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, 197885 + ... + 201336.

It is an arithmetic number, because the mean of its divisors is an integer number (129347928).

Almost surely, 2^689055446 is an apocalyptic number.

689055446 is a deficient number, since it is larger than the sum of its proper divisors (345727978).

689055446 is a wasteful number, since it uses less digits than its factorization.

689055446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400086.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The square root of 689055446 is about 26249.8656377514. The cubic root of 689055446 is about 883.2521905133.

The spelling of 689055446 in words is "six hundred eighty-nine million, fifty-five thousand, four hundred forty-six".