1180644 has 12 divisors (see below), whose sum is σ = 2754864. Its totient is φ = 393544.

The previous prime is 1180643. The next prime is 1180657. The reversal of 1180644 is 4460811.

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

It is not an unprimeable number, because it can be changed into a prime (1180643) 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, 49182 + ... + 49205.

It is an arithmetic number, because the mean of its divisors is an integer number (229572).

2^1180644 is an apocalyptic number.

It is an amenable number.

1180644 is an abundant number, since it is smaller than the sum of its proper divisors (1574220).

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

1180644 is a wasteful number, since it uses less digits than its factorization.

1180644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98394 (or 98392 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1180644 is about 1086.5744337136. The cubic root of 1180644 is about 105.6914010083.

The spelling of 1180644 in words is "one million, one hundred eighty thousand, six hundred forty-four".