1151688 has 32 divisors (see below), whose sum is σ = 2943360. Its totient is φ = 375360.

The previous prime is 1151687. The next prime is 1151701. The reversal of 1151688 is 8861511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151687) 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, 618 + ... + 1638.

It is an arithmetic number, because the mean of its divisors is an integer number (91980).

2^1151688 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 1151688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471680).

1151688 is an abundant number, since it is smaller than the sum of its proper divisors (1791672).

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

1151688 is a wasteful number, since it uses less digits than its factorization.

1151688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077 (or 1073 counting only the distinct ones).

The product of its digits is 1920, while the sum is 30.

The square root of 1151688 is about 1073.1672749390. The cubic root of 1151688 is about 104.8201911255.

The spelling of 1151688 in words is "one million, one hundred fifty-one thousand, six hundred eighty-eight".