863387 has 4 divisors (see below), whose sum is σ = 986736. Its totient is φ = 740040.

The previous prime is 863377. The next prime is 863393. The reversal of 863387 is 783368.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 863387 - 2⁶ = 863323 is a prime.

It is a super-2 number, since 2×863387² = 1490874223538, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (863377) 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, 61664 + ... + 61677.

It is an arithmetic number, because the mean of its divisors is an integer number (246684).

2⁸⁶³³⁸⁷ is an apocalyptic number.

863387 is a deficient number, since it is larger than the sum of its proper divisors (123349).

863387 is a wasteful number, since it uses less digits than its factorization.

863387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123348.

The product of its digits is 24192, while the sum is 35.

The square root of 863387 is about 929.1862030831. The cubic root of 863387 is about 95.2215328620.

The spelling of 863387 in words is "eight hundred sixty-three thousand, three hundred eighty-seven".