1689644881662 has 16 divisors (see below), whose sum is σ = 3488299110912. Its totient is φ = 545046735960.

The previous prime is 1689644881657. The next prime is 1689644881787. The reversal of 1689644881662 is 2661884469861.

It is a super-2 number, since 2×1689644881662² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 4542055948 + ... + 4542056319.

It is an arithmetic number, because the mean of its divisors is an integer number (218018694432).

Almost surely, 2^{1689644881662} is an apocalyptic number.

1689644881662 is an abundant number, since it is smaller than the sum of its proper divisors (1798654229250).

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

1689644881662 is a wasteful number, since it uses less digits than its factorization.

1689644881662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9084112303.

The product of its digits is 191102976, while the sum is 69.

The spelling of 1689644881662 in words is "one trillion, six hundred eighty-nine billion, six hundred forty-four million, eight hundred eighty-one thousand, six hundred sixty-two".