688707468 has 48 divisors (see below), whose sum is σ = 1890574560. Its totient is φ = 216064512.

The previous prime is 688707443. The next prime is 688707491. The reversal of 688707468 is 864707886.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185721 + ... + 189392.

It is an arithmetic number, because the mean of its divisors is an integer number (39386970).

Almost surely, 2^688707468 is an apocalyptic number.

688707468 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

688707468 is an abundant number, since it is smaller than the sum of its proper divisors (1201867092).

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

688707468 is a wasteful number, since it uses less digits than its factorization.

688707468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375143 (or 375135 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The square root of 688707468 is about 26243.2366144117. The cubic root of 688707468 is about 883.1034825560.

The spelling of 688707468 in words is "six hundred eighty-eight million, seven hundred seven thousand, four hundred sixty-eight".