688332133 has 8 divisors (see below), whose sum is σ = 724814720. Its totient is φ = 651875040.

The previous prime is 688332121. The next prime is 688332157. The reversal of 688332133 is 331233886.

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 688332133 - 2¹⁷ = 688201061 is a prime.

It is a super-2 number, since 2×688332133² = 947602250640659378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 688332092 and 688332101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688332233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77428 + ... + 85858.

It is an arithmetic number, because the mean of its divisors is an integer number (90601840).

Almost surely, 2^688332133 is an apocalyptic number.

It is an amenable number.

688332133 is a deficient number, since it is larger than the sum of its proper divisors (36482587).

688332133 is a wasteful number, since it uses less digits than its factorization.

688332133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12747.

The product of its digits is 62208, while the sum is 37.

The square root of 688332133 is about 26236.0845592478. The cubic root of 688332133 is about 882.9430274558.

The spelling of 688332133 in words is "six hundred eighty-eight million, three hundred thirty-two thousand, one hundred thirty-three".