1689936684 has 48 divisors (see below), whose sum is σ = 4331201280. Its totient is φ = 510459840.

The previous prime is 1689936667. The next prime is 1689936701. The reversal of 1689936684 is 4866399861.

It is an interprime number because it is at equal distance from previous prime (1689936667) and next prime (1689936701).

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, 155887 + ... + 166374.

It is an arithmetic number, because the mean of its divisors is an integer number (90233360).

Almost surely, 2^1689936684 is an apocalyptic number.

It is an amenable number.

1689936684 is an abundant number, since it is smaller than the sum of its proper divisors (2641264596).

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

1689936684 is a wasteful number, since it uses less digits than its factorization.

1689936684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322310 (or 322308 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 60.

The square root of 1689936684 is about 41108.8394873901. The cubic root of 1689936684 is about 1191.1235496417.

The spelling of 1689936684 in words is "one billion, six hundred eighty-nine million, nine hundred thirty-six thousand, six hundred eighty-four".