688713893 has 8 divisors (see below), whose sum is σ = 808374912. Its totient is φ = 574371216.

The previous prime is 688713847. The next prime is 688713899. The reversal of 688713893 is 398317886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 688713893 - 2⁶ = 688713829 is a prime.

It is a super-2 number, since 2×688713893² = 948653652822430898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688713899) by changing a digit.

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, 1329305 + ... + 1329822.

It is an arithmetic number, because the mean of its divisors is an integer number (101046864).

Almost surely, 2^688713893 is an apocalyptic number.

It is an amenable number.

688713893 is a deficient number, since it is larger than the sum of its proper divisors (119661019).

688713893 is a wasteful number, since it uses less digits than its factorization.

688713893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659171.

The product of its digits is 1741824, while the sum is 53.

The square root of 688713893 is about 26243.3590266185. The cubic root of 688713893 is about 883.1062287254.

The spelling of 688713893 in words is "six hundred eighty-eight million, seven hundred thirteen thousand, eight hundred ninety-three".