787863 has 4 divisors (see below), whose sum is σ = 1050488. Its totient is φ = 525240.

The previous prime is 787837. The next prime is 787879. The reversal of 787863 is 368787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368787 = 3 ⋅122929.

It is not a de Polignac number, because 787863 - 2¹² = 783767 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787823) 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, 131308 + ... + 131313.

It is an arithmetic number, because the mean of its divisors is an integer number (262622).

2⁷⁸⁷⁸⁶³ is an apocalyptic number.

787863 is a deficient number, since it is larger than the sum of its proper divisors (262625).

787863 is a wasteful number, since it uses less digits than its factorization.

787863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262624.

The product of its digits is 56448, while the sum is 39.

The square root of 787863 is about 887.6164712307. The cubic root of 787863 is about 92.3599243387.

The spelling of 787863 in words is "seven hundred eighty-seven thousand, eight hundred sixty-three".