689542346 has 16 divisors (see below), whose sum is σ = 1105610688. Its totient is φ = 321736800.

The previous prime is 689542339. The next prime is 689542351. The reversal of 689542346 is 643245986.

It is a self number, because there is not a number n which added to its sum of digits gives 689542346.

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 7 ways as a sum of consecutive naturals, for example, 180920 + ... + 184691.

It is an arithmetic number, because the mean of its divisors is an integer number (69100668).

Almost surely, 2^689542346 is an apocalyptic number.

689542346 is a deficient number, since it is larger than the sum of its proper divisors (416068342).

689542346 is a wasteful number, since it uses less digits than its factorization.

689542346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365677.

The product of its digits is 1244160, while the sum is 47.

The square root of 689542346 is about 26259.1383331594. The cubic root of 689542346 is about 883.4601825980.

The spelling of 689542346 in words is "six hundred eighty-nine million, five hundred forty-two thousand, three hundred forty-six".