1206644 has 24 divisors (see below), whose sum is σ = 2247168. Its totient is φ = 565920.

The previous prime is 1206637. The next prime is 1206679. The reversal of 1206644 is 4466021.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4457 + ... + 4719.

It is an arithmetic number, because the mean of its divisors is an integer number (93632).

2^1206644 is an apocalyptic number.

It is an amenable number.

1206644 is a deficient number, since it is larger than the sum of its proper divisors (1040524).

1206644 is a wasteful number, since it uses less digits than its factorization.

1206644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1206644 is about 1098.4734862526. The cubic root of 1206644 is about 106.4616156206.

The spelling of 1206644 in words is "one million, two hundred six thousand, six hundred forty-four".