688124460 has 48 divisors (see below), whose sum is σ = 1945472256. Its totient is φ = 181716672.

The previous prime is 688124447. The next prime is 688124473. The reversal of 688124460 is 64421886.

It is an interprime number because it is at equal distance from previous prime (688124447) and next prime (688124473).

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 15 ways as a sum of consecutive naturals, for example, 49494 + ... + 61853.

It is an arithmetic number, because the mean of its divisors is an integer number (40530672).

Almost surely, 2^688124460 is an apocalyptic number.

688124460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

688124460 is an abundant number, since it is smaller than the sum of its proper divisors (1257347796).

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

688124460 is a wasteful number, since it uses less digits than its factorization.

688124460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111462 (or 111460 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 688124460 is about 26232.1264864288. The cubic root of 688124460 is about 882.8542225208.

The spelling of 688124460 in words is "six hundred eighty-eight million, one hundred twenty-four thousand, four hundred sixty".