688926414 has 16 divisors (see below), whose sum is σ = 1503112320. Its totient is φ = 208765560.

The previous prime is 688926409. The next prime is 688926443. The reversal of 688926414 is 414629886.

It is a Curzon number.

It is a congruent number.

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, 5219074 + ... + 5219205.

It is an arithmetic number, because the mean of its divisors is an integer number (93944520).

Almost surely, 2^688926414 is an apocalyptic number.

688926414 is an abundant number, since it is smaller than the sum of its proper divisors (814185906).

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

688926414 is a wasteful number, since it uses less digits than its factorization.

688926414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10438295.

The product of its digits is 663552, while the sum is 48.

The square root of 688926414 is about 26247.4077577196. The cubic root of 688926414 is about 883.1970546933.

The spelling of 688926414 in words is "six hundred eighty-eight million, nine hundred twenty-six thousand, four hundred fourteen".