1185644 has 12 divisors (see below), whose sum is σ = 2083704. Its totient is φ = 590304.

The previous prime is 1185643. The next prime is 1185647. The reversal of 1185644 is 4465811.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1185643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779 + ... + 1725.

It is an arithmetic number, because the mean of its divisors is an integer number (173642).

2^1185644 is an apocalyptic number.

It is an amenable number.

1185644 is a deficient number, since it is larger than the sum of its proper divisors (898060).

1185644 is a wasteful number, since it uses less digits than its factorization.

1185644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264 (or 1262 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 1185644 is about 1088.8728116727. The cubic root of 1185644 is about 105.8403910946.

The spelling of 1185644 in words is "one million, one hundred eighty-five thousand, six hundred forty-four".