688357429 has 8 divisors (see below), whose sum is σ = 703170720. Its totient is φ = 673699536.

The previous prime is 688357391. The next prime is 688357451. The reversal of 688357429 is 924753886.

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 688357429 - 2¹⁵ = 688324661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688357469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29874 + ... + 47635.

It is an arithmetic number, because the mean of its divisors is an integer number (87896340).

Almost surely, 2^688357429 is an apocalyptic number.

It is an amenable number.

688357429 is a deficient number, since it is larger than the sum of its proper divisors (14813291).

688357429 is a wasteful number, since it uses less digits than its factorization.

688357429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77699.

The product of its digits is 2903040, while the sum is 52.

The square root of 688357429 is about 26236.5666389488. The cubic root of 688357429 is about 882.9538432873.

The spelling of 688357429 in words is "six hundred eighty-eight million, three hundred fifty-seven thousand, four hundred twenty-nine".