689546754 has 48 divisors (see below), whose sum is σ = 1621681152. Its totient is φ = 210488544.

The previous prime is 689546731. The next prime is 689546761. The reversal of 689546754 is 457645986.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 689546754.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18117 + ... + 41319.

It is an arithmetic number, because the mean of its divisors is an integer number (33785024).

Almost surely, 2^689546754 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689546754, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810840576).

689546754 is an abundant number, since it is smaller than the sum of its proper divisors (932134398).

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

689546754 is a wasteful number, since it uses less digits than its factorization.

689546754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23351 (or 23348 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The square root of 689546754 is about 26259.2222657108. Note that the first 4 decimals coincide. The cubic root of 689546754 is about 883.4620651434.

The spelling of 689546754 in words is "six hundred eighty-nine million, five hundred forty-six thousand, seven hundred fifty-four".