1200863 has 4 divisors (see below), whose sum is σ = 1271520. Its totient is φ = 1130208.

The previous prime is 1200839. The next prime is 1200869. The reversal of 1200863 is 3680021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3680021 = 151 ⋅24371.

It is a cyclic number.

It is not a de Polignac number, because 1200863 - 2⁶ = 1200799 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200869) 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, 35303 + ... + 35336.

It is an arithmetic number, because the mean of its divisors is an integer number (317880).

2^1200863 is an apocalyptic number.

1200863 is a deficient number, since it is larger than the sum of its proper divisors (70657).

1200863 is an equidigital number, since it uses as much as digits as its factorization.

1200863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70656.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1200863 is about 1095.8389480211. The cubic root of 1200863 is about 106.2913251013.

Adding to 1200863 its reverse (3680021), we get a palindrome (4880884).

The spelling of 1200863 in words is "one million, two hundred thousand, eight hundred sixty-three".