863667387 has 48 divisors (see below), whose sum is σ = 1415715840. Its totient is φ = 519971760.

The previous prime is 863667367. The next prime is 863667397. The reversal of 863667387 is 783766368.

It is not a de Polignac number, because 863667387 - 2⁶ = 863667323 is a prime.

Its product of digits (6096384) is a multiple of the sum of its prime divisors (1764).

It is not an unprimeable number, because it can be changed into a prime (863667367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 544798 + ... + 546380.

It is an arithmetic number, because the mean of its divisors is an integer number (29494080).

Almost surely, 2^863667387 is an apocalyptic number.

863667387 is a deficient number, since it is larger than the sum of its proper divisors (552048453).

863667387 is a wasteful number, since it uses less digits than its factorization.

863667387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781 (or 1764 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The square root of 863667387 is about 29388.2185067418. The cubic root of 863667387 is about 952.3183955342.

The spelling of 863667387 in words is "eight hundred sixty-three million, six hundred sixty-seven thousand, three hundred eighty-seven".