688386832 has 40 divisors (see below), whose sum is σ = 1528027200. Its totient is φ = 294298752.

The previous prime is 688386823. The next prime is 688386841. The reversal of 688386832 is 238683886.

It is an interprime number because it is at equal distance from previous prime (688386823) and next prime (688386841).

It is a self number, because there is not a number n which added to its sum of digits gives 688386832.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39594 + ... + 54262.

It is an arithmetic number, because the mean of its divisors is an integer number (38200680).

Almost surely, 2^688386832 is an apocalyptic number.

It is an amenable number.

688386832 is an abundant number, since it is smaller than the sum of its proper divisors (839640368).

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

688386832 is a wasteful number, since it uses less digits than its factorization.

688386832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15103 (or 15097 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 52.

The square root of 688386832 is about 26237.1269768624. The cubic root of 688386832 is about 882.9664148193.

The spelling of 688386832 in words is "six hundred eighty-eight million, three hundred eighty-six thousand, eight hundred thirty-two".