688124552 has 16 divisors (see below), whose sum is σ = 1312102800. Its totient is φ = 338230480.

The previous prime is 688124543. The next prime is 688124573. The reversal of 688124552 is 255421886.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728474 + ... + 729417.

It is an arithmetic number, because the mean of its divisors is an integer number (82006425).

Almost surely, 2^688124552 is an apocalyptic number.

It is an amenable number.

688124552 is a deficient number, since it is larger than the sum of its proper divisors (623978248).

688124552 is a wasteful number, since it uses less digits than its factorization.

688124552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457956 (or 1457952 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The square root of 688124552 is about 26232.1282400037. The cubic root of 688124552 is about 882.8542618657.

The spelling of 688124552 in words is "six hundred eighty-eight million, one hundred twenty-four thousand, five hundred fifty-two".