1689936996 has 24 divisors (see below), whose sum is σ = 4301658144. Its totient is φ = 512102080.

The previous prime is 1689936977. The next prime is 1689937019. The reversal of 1689936996 is 6996399861.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6401145 + ... + 6401408.

It is an arithmetic number, because the mean of its divisors is an integer number (179235756).

Almost surely, 2^1689936996 is an apocalyptic number.

It is an amenable number.

1689936996 is an abundant number, since it is smaller than the sum of its proper divisors (2611721148).

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

1689936996 is a wasteful number, since it uses less digits than its factorization.

1689936996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12802571 (or 12802569 counting only the distinct ones).

The product of its digits is 34012224, while the sum is 66.

The square root of 1689936996 is about 41108.8432821942. The cubic root of 1689936996 is about 1191.1236229444.

The spelling of 1689936996 in words is "one billion, six hundred eighty-nine million, nine hundred thirty-six thousand, nine hundred ninety-six".