1233861 has 4 divisors (see below), whose sum is σ = 1645152. Its totient is φ = 822572.

The previous prime is 1233851. The next prime is 1233887. The reversal of 1233861 is 1683321.

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.

It is a cyclic number.

It is not a de Polignac number, because 1233861 - 2¹⁴ = 1217477 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205641 + ... + 205646.

It is an arithmetic number, because the mean of its divisors is an integer number (411288).

2^1233861 is an apocalyptic number.

It is an amenable number.

1233861 is a deficient number, since it is larger than the sum of its proper divisors (411291).

1233861 is an equidigital number, since it uses as much as digits as its factorization.

1233861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411290.

The product of its digits is 864, while the sum is 24.

The square root of 1233861 is about 1110.7929600065. The cubic root of 1233861 is about 107.2561192112.

The spelling of 1233861 in words is "one million, two hundred thirty-three thousand, eight hundred sixty-one".