1171206 has 48 divisors (see below), whose sum is σ = 2787120. Its totient is φ = 364320.

The previous prime is 1171201. The next prime is 1171207. The reversal of 1171206 is 6021711.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28546 + ... + 28586.

It is an arithmetic number, because the mean of its divisors is an integer number (58065).

2^1171206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1171206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393560).

1171206 is an abundant number, since it is smaller than the sum of its proper divisors (1615914).

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

1171206 is a wasteful number, since it uses less digits than its factorization.

1171206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 1171206 is about 1082.2227127537. Note that the first 3 decimals coincide. The cubic root of 1171206 is about 105.4090168921.

Adding to 1171206 its reverse (6021711), we get a palindrome (7192917).

It can be divided in two parts, 11 and 71206, that added together give a palindrome (71217).

The spelling of 1171206 in words is "one million, one hundred seventy-one thousand, two hundred six".