688262943485 has 16 divisors (see below), whose sum is σ = 918139353600. Its totient is φ = 491860365120.

The previous prime is 688262943481. The next prime is 688262943491. The reversal of 688262943485 is 584349262886.

It is not a de Polignac number, because 688262943485 - 2² = 688262943481 is a prime.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688262943481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170782835 + ... + 170786864.

It is an arithmetic number, because the mean of its divisors is an integer number (57383709600).

Almost surely, 2^688262943485 is an apocalyptic number.

688262943485 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

688262943485 is a deficient number, since it is larger than the sum of its proper divisors (229876410115).

688262943485 is a wasteful number, since it uses less digits than its factorization.

688262943485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341569748.

The product of its digits is 159252480, while the sum is 65.

The spelling of 688262943485 in words is "six hundred eighty-eight billion, two hundred sixty-two million, nine hundred forty-three thousand, four hundred eighty-five".