1201686 has 16 divisors (see below), whose sum is σ = 2468784. Its totient is φ = 389664.

The previous prime is 1201643. The next prime is 1201687. The reversal of 1201686 is 6861021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201687) 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, 2485 + ... + 2928.

It is an arithmetic number, because the mean of its divisors is an integer number (154299).

2^1201686 is an apocalyptic number.

1201686 is an abundant number, since it is smaller than the sum of its proper divisors (1267098).

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

1201686 is a wasteful number, since it uses less digits than its factorization.

1201686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5455.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1201686 is about 1096.2143950888. The cubic root of 1201686 is about 106.3156014715.

The spelling of 1201686 in words is "one million, two hundred one thousand, six hundred eighty-six".