688332366 has 12 divisors (see below), whose sum is σ = 1491386832. Its totient is φ = 229444116.

The previous prime is 688332341. The next prime is 688332367. The reversal of 688332366 is 663233886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688332367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19120326 + ... + 19120361.

It is an arithmetic number, because the mean of its divisors is an integer number (124282236).

Almost surely, 2^688332366 is an apocalyptic number.

688332366 is an abundant number, since it is smaller than the sum of its proper divisors (803054466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

688332366 is a wasteful number, since it uses less digits than its factorization.

688332366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38240695 (or 38240692 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 688332366 is about 26236.0889996966. The cubic root of 688332366 is about 882.9431270810.

The spelling of 688332366 in words is "six hundred eighty-eight million, three hundred thirty-two thousand, three hundred sixty-six".