1206784 has 20 divisors (see below), whose sum is σ = 2412234. Its totient is φ = 603136.

The previous prime is 1206781. The next prime is 1206791. The reversal of 1206784 is 4876021.

It can be written as a sum of positive squares in only one way, i.e., 1149184 + 57600 = 1072^2 + 240^2 .

It is not an unprimeable number, because it can be changed into a prime (1206781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667 + ... + 1690.

2^1206784 is an apocalyptic number.

It is an amenable number.

1206784 is a deficient number, since it is larger than the sum of its proper divisors (1205450).

1206784 is an frugal number, since it uses more digits than its factorization.

1206784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375 (or 2359 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1206784 is about 1098.5372092014. The cubic root of 1206784 is about 106.4657328388.

The spelling of 1206784 in words is "one million, two hundred six thousand, seven hundred eighty-four".