1117688 has 32 divisors (see below), whose sum is σ = 2464560. Its totient is φ = 468480.

The previous prime is 1117681. The next prime is 1117709. The reversal of 1117688 is 8867111.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117681) 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, 656 + ... + 1632.

2^1117688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1117688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1232280).

1117688 is an abundant number, since it is smaller than the sum of its proper divisors (1346872).

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

1117688 is a wasteful number, since it uses less digits than its factorization.

1117688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 1003 counting only the distinct ones).

The product of its digits is 2688, while the sum is 32.

The square root of 1117688 is about 1057.2076428025. The cubic root of 1117688 is about 103.7783742009.

The spelling of 1117688 in words is "one million, one hundred seventeen thousand, six hundred eighty-eight".