1689776407396 has 243 divisors, whose sum is σ = 3963389609907. Its totient is φ = 628014451680.

The previous prime is 1689776407357. The next prime is 1689776407447. The reversal of 1689776407396 is 6937046779861.

The square root of 1689776407396 is 1299914.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 4604295205 + ... + 4604295571.

Almost surely, 2^{1689776407396} is an apocalyptic number.

1689776407396 is the 1299914-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1689776407396

1689776407396 is an abundant number, since it is smaller than the sum of its proper divisors (2273613202511).

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

1689776407396 is a wasteful number, since it uses less digits than its factorization.

1689776407396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 576108288, while the sum is 73.

The spelling of 1689776407396 in words is "one trillion, six hundred eighty-nine billion, seven hundred seventy-six million, four hundred seven thousand, three hundred ninety-six".