688720119368 has 36 divisors (see below), whose sum is σ = 1350042829065. Its totient is φ = 329362063008.

The previous prime is 688720119361. The next prime is 688720119401. The reversal of 688720119368 is 863911027886.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 684289619524 + 4430499844 = 827218^2 + 66562^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=586822.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688720119361) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 53981246 + ... + 53994002.

Almost surely, 2^688720119368 is an apocalyptic number.

It is an amenable number.

688720119368 is a deficient number, since it is larger than the sum of its proper divisors (661322709697).

688720119368 is an frugal number, since it uses more digits than its factorization.

688720119368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25566 (or 12782 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 59.

The spelling of 688720119368 in words is "six hundred eighty-eight billion, seven hundred twenty million, one hundred nineteen thousand, three hundred sixty-eight".