1206161 has 8 divisors (see below), whose sum is σ = 1344384. Its totient is φ = 1072720.

The previous prime is 1206157. The next prime is 1206169. The reversal of 1206161 is 1616021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1206161 - 2² = 1206157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1206169) 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, 650 + ... + 1683.

It is an arithmetic number, because the mean of its divisors is an integer number (168048).

2^1206161 is an apocalyptic number.

1206161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1206161 is a deficient number, since it is larger than the sum of its proper divisors (138223).

1206161 is a wasteful number, since it uses less digits than its factorization.

1206161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1206161 is about 1098.2536136977. The cubic root of 1206161 is about 106.4474087728.

The spelling of 1206161 in words is "one million, two hundred six thousand, one hundred sixty-one".