1171616 has 48 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 529920.

The previous prime is 1171601. The next prime is 1171619. The reversal of 1171616 is 6161711.

It is a junction number, because it is equal to n+sod(n) for n = 1171591 and 1171600.

It is not an unprimeable number, because it can be changed into a prime (1171619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24905 + ... + 24951.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2^1171616 is an apocalyptic number.

1171616 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 1171616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270080).

1171616 is an abundant number, since it is smaller than the sum of its proper divisors (1368544).

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

1171616 is a wasteful number, since it uses less digits than its factorization.

1171616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 109 counting only the distinct ones).

The product of its digits is 252, while the sum is 23.

The square root of 1171616 is about 1082.4121211443. The cubic root of 1171616 is about 105.4213155127.

The spelling of 1171616 in words is "one million, one hundred seventy-one thousand, six hundred sixteen".