689477743552 has 56 divisors (see below), whose sum is σ = 1475390487872. Its totient is φ = 317796480000.

The previous prime is 689477743543. The next prime is 689477743621. The reversal of 689477743552 is 255347774986.

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, 73102 + ... + 1176562.

It is an arithmetic number, because the mean of its divisors is an integer number (26346258712).

Almost surely, 2^689477743552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689477743552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737695243936).

689477743552 is an abundant number, since it is smaller than the sum of its proper divisors (785912744320).

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

689477743552 is a wasteful number, since it uses less digits than its factorization.

689477743552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104237 (or 1104227 counting only the distinct ones).

The product of its digits is 355622400, while the sum is 67.

The spelling of 689477743552 in words is "six hundred eighty-nine billion, four hundred seventy-seven million, seven hundred forty-three thousand, five hundred fifty-two".