1186866 has 32 divisors (see below), whose sum is σ = 2726400. Its totient is φ = 382320.

The previous prime is 1186847. The next prime is 1186879. The reversal of 1186866 is 6686811.

It is a self number, because there is not a number n which added to its sum of digits gives 1186866.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1320 + ... + 2028.

It is an arithmetic number, because the mean of its divisors is an integer number (85200).

2^1186866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1186866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363200).

1186866 is an abundant number, since it is smaller than the sum of its proper divisors (1539534).

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

1186866 is a wasteful number, since it uses less digits than its factorization.

1186866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 745 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 1186866 is about 1089.4337978969. The cubic root of 1186866 is about 105.8767405522.

Subtracting 1186866 from its reverse (6686811), we obtain a palindrome (5499945).

The spelling of 1186866 in words is "one million, one hundred eighty-six thousand, eight hundred sixty-six".