688896044 has 24 divisors (see below), whose sum is σ = 1280853840. Its totient is φ = 323580096.

The previous prime is 688896041. The next prime is 688896101. The reversal of 688896044 is 440698886.

It is not an unprimeable number, because it can be changed into a prime (688896041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75962 + ... + 84545.

It is an arithmetic number, because the mean of its divisors is an integer number (53368910).

Almost surely, 2^688896044 is an apocalyptic number.

It is an amenable number.

688896044 is a deficient number, since it is larger than the sum of its proper divisors (591957796).

688896044 is a wasteful number, since it uses less digits than its factorization.

688896044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160577 (or 160575 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 53.

The square root of 688896044 is about 26246.8292180217. The cubic root of 688896044 is about 883.1840764863.

The spelling of 688896044 in words is "six hundred eighty-eight million, eight hundred ninety-six thousand, forty-four".