1026863 has 4 divisors (see below), whose sum is σ = 1029600. Its totient is φ = 1024128.

The previous prime is 1026859. The next prime is 1026887. The reversal of 1026863 is 3686201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3686201 = 313 ⋅11777.

It is a cyclic number.

It is not a de Polignac number, because 1026863 - 2² = 1026859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026833) 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, 695 + ... + 1592.

It is an arithmetic number, because the mean of its divisors is an integer number (257400).

2^1026863 is an apocalyptic number.

1026863 is a deficient number, since it is larger than the sum of its proper divisors (2737).

1026863 is an equidigital number, since it uses as much as digits as its factorization.

1026863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1026863 is about 1013.3424889937. The cubic root of 1026863 is about 100.8875328831.

The spelling of 1026863 in words is "one million, twenty-six thousand, eight hundred sixty-three".