688364679 has 8 divisors (see below), whose sum is σ = 937347840. Its totient is φ = 449145656.

The previous prime is 688364659. The next prime is 688364701. The reversal of 688364679 is 976463886.

It is a happy number.

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 688364679 - 2⁸ = 688364423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688364609) 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, 2440869 + ... + 2441150.

It is an arithmetic number, because the mean of its divisors is an integer number (117168480).

Almost surely, 2^688364679 is an apocalyptic number.

688364679 is a deficient number, since it is larger than the sum of its proper divisors (248983161).

688364679 is a wasteful number, since it uses less digits than its factorization.

688364679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4882069.

The product of its digits is 10450944, while the sum is 57.

The square root of 688364679 is about 26236.7048045291. The cubic root of 688364679 is about 882.9569431269.

The spelling of 688364679 in words is "six hundred eighty-eight million, three hundred sixty-four thousand, six hundred seventy-nine".