1689761608 has 16 divisors (see below), whose sum is σ = 3306055680. Its totient is φ = 808146768.

The previous prime is 1689761603. The next prime is 1689761617. The reversal of 1689761608 is 8061679861.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1689761603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4591560 + ... + 4591927.

It is an arithmetic number, because the mean of its divisors is an integer number (206628480).

Almost surely, 2^1689761608 is an apocalyptic number.

It is an amenable number.

1689761608 is a deficient number, since it is larger than the sum of its proper divisors (1616294072).

1689761608 is a wasteful number, since it uses less digits than its factorization.

1689761608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9183516 (or 9183512 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 1689761608 is about 41106.7100118703. The cubic root of 1689761608 is about 1191.0824150930.

The spelling of 1689761608 in words is "one billion, six hundred eighty-nine million, seven hundred sixty-one thousand, six hundred eight".