688732246 has 16 divisors (see below), whose sum is σ = 1040611824. Its totient is φ = 341871264.

The previous prime is 688732243. The next prime is 688732259. The reversal of 688732246 is 642237886.

It is a junction number, because it is equal to n+sod(n) for n = 688732196 and 688732205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688732243) 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, 160201 + ... + 164443.

It is an arithmetic number, because the mean of its divisors is an integer number (65038239).

Almost surely, 2^688732246 is an apocalyptic number.

688732246 is a deficient number, since it is larger than the sum of its proper divisors (351879578).

688732246 is a wasteful number, since it uses less digits than its factorization.

688732246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815.

The product of its digits is 774144, while the sum is 46.

The square root of 688732246 is about 26243.7086937041. The cubic root of 688732246 is about 883.1140730590.

The spelling of 688732246 in words is "six hundred eighty-eight million, seven hundred thirty-two thousand, two hundred forty-six".