1208861 has 4 divisors (see below), whose sum is σ = 1211232. Its totient is φ = 1206492.

The previous prime is 1208849. The next prime is 1208863. The reversal of 1208861 is 1688021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1688021 = 149 ⋅11329.

It is a cyclic number.

It is not a de Polignac number, because 1208861 - 2⁶ = 1208797 is a prime.

It is a super-2 number, since 2×1208861² = 2922689834642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1208861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1208863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71 + ... + 1556.

It is an arithmetic number, because the mean of its divisors is an integer number (302808).

2^1208861 is an apocalyptic number.

It is an amenable number.

1208861 is a deficient number, since it is larger than the sum of its proper divisors (2371).

1208861 is an equidigital number, since it uses as much as digits as its factorization.

1208861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1208861 is about 1099.4821508328. The cubic root of 1208861 is about 106.5267773411.

The spelling of 1208861 in words is "one million, two hundred eight thousand, eight hundred sixty-one".