1689839064 has 64 divisors (see below), whose sum is σ = 4735605600. Its totient is φ = 558286848.

The previous prime is 1689839059. The next prime is 1689839071. The reversal of 1689839064 is 4609389861.

1689839064 is a `hidden beast` number, since 168 + 98 + 390 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1689839064.

It is a congruent number.

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, 10209 + ... + 59024.

Almost surely, 2^1689839064 is an apocalyptic number.

It is an amenable number.

1689839064 is an abundant number, since it is smaller than the sum of its proper divisors (3045766536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1689839064 is a wasteful number, since it uses less digits than its factorization.

1689839064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69361 (or 69351 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 1689839064 is about 41107.6521343654. The cubic root of 1689839064 is about 1191.1006139264.

The spelling of 1689839064 in words is "one billion, six hundred eighty-nine million, eight hundred thirty-nine thousand, sixty-four".