1118656 has 56 divisors (see below), whose sum is σ = 2779776. Its totient is φ = 433920.

The previous prime is 1118653. The next prime is 1118659. The reversal of 1118656 is 6568111.

It is an interprime number because it is at equal distance from previous prime (1118653) and next prime (1118659).

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118653) 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, 4815 + ... + 5041.

2^1118656 is an apocalyptic number.

1118656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1118656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1389888).

1118656 is an abundant number, since it is smaller than the sum of its proper divisors (1661120).

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

1118656 is a wasteful number, since it uses less digits than its factorization.

1118656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 247 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The square root of 1118656 is about 1057.6653535027. The cubic root of 1118656 is about 103.8083254571.

The spelling of 1118656 in words is "one million, one hundred eighteen thousand, six hundred fifty-six".