689738749983 has 32 divisors (see below), whose sum is σ = 1059582244800. Its totient is φ = 442914998400.

The previous prime is 689738749963. The next prime is 689738750009. The reversal of 689738749983 is 389947837986.

689738749983 is a `hidden beast` number, since 6 + 8 + 97 + 38 + 7 + 499 + 8 + 3 = 666.

It is not a de Polignac number, because 689738749983 - 2⁶ = 689738749919 is a prime.

It is a super-2 number, since 2×689738749983² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689738749913) 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 31 ways as a sum of consecutive naturals, for example, 716548 + ... + 1375833.

It is an arithmetic number, because the mean of its divisors is an integer number (33111945150).

Almost surely, 2^689738749983 is an apocalyptic number.

689738749983 is a deficient number, since it is larger than the sum of its proper divisors (369843494817).

689738749983 is a wasteful number, since it uses less digits than its factorization.

689738749983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092840 (or 2092834 counting only the distinct ones).

The product of its digits is 3950456832, while the sum is 81.

The spelling of 689738749983 in words is "six hundred eighty-nine billion, seven hundred thirty-eight million, seven hundred forty-nine thousand, nine hundred eighty-three".