688328642115 has 48 divisors (see below), whose sum is σ = 1203451455648. Its totient is φ = 363935835648.

The previous prime is 688328642087. The next prime is 688328642117. The reversal of 688328642115 is 511246823886.

688328642115 is a `hidden beast` number, since 68 + 83 + 2 + 86 + 421 + 1 + 5 = 666.

It is not a de Polignac number, because 688328642115 - 2⁵ = 688328642083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (688328642117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2793807 + ... + 3030183.

It is an arithmetic number, because the mean of its divisors is an integer number (25071905326).

Almost surely, 2^688328642115 is an apocalyptic number.

688328642115 is a deficient number, since it is larger than the sum of its proper divisors (515122813533).

688328642115 is a wasteful number, since it uses less digits than its factorization.

688328642115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236948 (or 236945 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The spelling of 688328642115 in words is "six hundred eighty-eight billion, three hundred twenty-eight million, six hundred forty-two thousand, one hundred fifteen".