1206636 has 24 divisors (see below), whose sum is σ = 2835504. Its totient is φ = 399360.

The previous prime is 1206619. The next prime is 1206637. The reversal of 1206636 is 6366021.

It is not an unprimeable number, because it can be changed into a prime (1206637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056 + ... + 2576.

It is an arithmetic number, because the mean of its divisors is an integer number (118146).

2^1206636 is an apocalyptic number.

It is an amenable number.

1206636 is an abundant number, since it is smaller than the sum of its proper divisors (1628868).

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

1206636 is a wasteful number, since it uses less digits than its factorization.

1206636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1206636 is about 1098.4698448296. The cubic root of 1206636 is about 106.4613803414.

The spelling of 1206636 in words is "one million, two hundred six thousand, six hundred thirty-six".