688484885 has 16 divisors (see below), whose sum is σ = 904563072. Its totient is φ = 498897600.

The previous prime is 688484873. The next prime is 688484897. The reversal of 688484885 is 588484886.

It is an interprime number because it is at equal distance from previous prime (688484873) and next prime (688484897).

It is not a de Polignac number, because 688484885 - 2⁶ = 688484821 is a prime.

It is a super-2 number, since 2×688484885² = 948022873746926450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 7361 + ... + 37830.

It is an arithmetic number, because the mean of its divisors is an integer number (56535192).

Almost surely, 2^688484885 is an apocalyptic number.

It is an amenable number.

688484885 is a deficient number, since it is larger than the sum of its proper divisors (216078187).

688484885 is a wasteful number, since it uses less digits than its factorization.

688484885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45484.

The product of its digits is 15728640, while the sum is 59.

The square root of 688484885 is about 26238.9955028770. The cubic root of 688484885 is about 883.0083357236.

Subtracting from 688484885 its reverse (588484886), we obtain a palindrome (99999999).

The spelling of 688484885 in words is "six hundred eighty-eight million, four hundred eighty-four thousand, eight hundred eighty-five".