1186644 has 12 divisors (see below), whose sum is σ = 2768864. Its totient is φ = 395544.

The previous prime is 1186631. The next prime is 1186657. The reversal of 1186644 is 4466811.

It is an interprime number because it is at equal distance from previous prime (1186631) and next prime (1186657).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×1186644³ = 5012825626109333952, which contains 333 as substring.

It is a congruent number.

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, 49432 + ... + 49455.

2^1186644 is an apocalyptic number.

It is an amenable number.

1186644 is an abundant number, since it is smaller than the sum of its proper divisors (1582220).

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

1186644 is a wasteful number, since it uses less digits than its factorization.

1186644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98894 (or 98892 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 1186644 is about 1089.3319053438. The cubic root of 1186644 is about 105.8701388235.

It can be divided in two parts, 1186 and 644, that added together give a triangular number (1830 = T₆₀).

The spelling of 1186644 in words is "one million, one hundred eighty-six thousand, six hundred forty-four".