688878552 has 32 divisors (see below), whose sum is σ = 1723837680. Its totient is φ = 229407360.

The previous prime is 688878529. The next prime is 688878571. The reversal of 688878552 is 255878886.

It is a junction number, because it is equal to n+sod(n) for n = 688878492 and 688878501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13102 + ... + 39362.

Almost surely, 2^688878552 is an apocalyptic number.

It is an amenable number.

688878552 is an abundant number, since it is smaller than the sum of its proper divisors (1034959128).

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

688878552 is a wasteful number, since it uses less digits than its factorization.

688878552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27363 (or 27359 counting only the distinct ones).

The product of its digits is 8601600, while the sum is 57.

The square root of 688878552 is about 26246.4959947038. The cubic root of 688878552 is about 883.1766013446.

The spelling of 688878552 in words is "six hundred eighty-eight million, eight hundred seventy-eight thousand, five hundred fifty-two".