1156656 has 20 divisors (see below), whose sum is σ = 2988152. Its totient is φ = 385536.

The previous prime is 1156643. The next prime is 1156681. The reversal of 1156656 is 6566511.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12001 + ... + 12096.

2^1156656 is an apocalyptic number.

1156656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1156656 is an abundant number, since it is smaller than the sum of its proper divisors (1831496).

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

1156656 is a wasteful number, since it uses less digits than its factorization.

1156656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24108 (or 24102 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 1156656 is about 1075.4794279762. The cubic root of 1156656 is about 104.9706947696.

The spelling of 1156656 in words is "one million, one hundred fifty-six thousand, six hundred fifty-six".