688874746 has 32 divisors (see below), whose sum is σ = 1222115328. Its totient is φ = 284983920.

The previous prime is 688874741. The next prime is 688874759. The reversal of 688874746 is 647478886.

It is not an unprimeable number, because it can be changed into a prime (688874741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190471 + ... + 194053.

It is an arithmetic number, because the mean of its divisors is an integer number (38191104).

Almost surely, 2^688874746 is an apocalyptic number.

688874746 is a deficient number, since it is larger than the sum of its proper divisors (533240582).

688874746 is a wasteful number, since it uses less digits than its factorization.

688874746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066.

The product of its digits is 14450688, while the sum is 58.

The square root of 688874746 is about 26246.4234896871. The cubic root of 688874746 is about 883.1749748478.

The spelling of 688874746 in words is "six hundred eighty-eight million, eight hundred seventy-four thousand, seven hundred forty-six".