688075428740 has 48 divisors (see below), whose sum is σ = 1748521095552. Its totient is φ = 222034423296.

The previous prime is 688075428739. The next prime is 688075428749. The reversal of 688075428740 is 47824570886.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 688075428740.

It is not an unprimeable number, because it can be changed into a prime (688075428749) 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, 144551282 + ... + 144556041.

It is an arithmetic number, because the mean of its divisors is an integer number (36427522824).

Almost surely, 2^688075428740 is an apocalyptic number.

It is an amenable number.

688075428740 is an abundant number, since it is smaller than the sum of its proper divisors (1060445666812).

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

688075428740 is a wasteful number, since it uses less digits than its factorization.

688075428740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289107356 (or 289107354 counting only the distinct ones).

The product of its (nonzero) digits is 24084480, while the sum is 59.

The spelling of 688075428740 in words is "six hundred eighty-eight billion, seventy-five million, four hundred twenty-eight thousand, seven hundred forty".