688152685 has 16 divisors (see below), whose sum is σ = 904737600. Its totient is φ = 498317440.

The previous prime is 688152671. The next prime is 688152701. The reversal of 688152685 is 586251886.

It is a happy number.

It is not a de Polignac number, because 688152685 - 2¹³ = 688144493 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14035 + ... + 39664.

It is an arithmetic number, because the mean of its divisors is an integer number (56546100).

Almost surely, 2^688152685 is an apocalyptic number.

It is an amenable number.

688152685 is a deficient number, since it is larger than the sum of its proper divisors (216584915).

688152685 is a wasteful number, since it uses less digits than its factorization.

688152685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53948.

The product of its digits is 921600, while the sum is 49.

The square root of 688152685 is about 26232.6644662718. The cubic root of 688152685 is about 882.8662931181.

The spelling of 688152685 in words is "six hundred eighty-eight million, one hundred fifty-two thousand, six hundred eighty-five".