863753487 has 16 divisors (see below), whose sum is σ = 1192275840. Its totient is φ = 555563232.

The previous prime is 863753483. The next prime is 863753521. The reversal of 863753487 is 784357368.

It is not a de Polignac number, because 863753487 - 2² = 863753483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863753483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149148 + ... + 154830.

It is an arithmetic number, because the mean of its divisors is an integer number (74517240).

Almost surely, 2^863753487 is an apocalyptic number.

863753487 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

863753487 is a deficient number, since it is larger than the sum of its proper divisors (328522353).

863753487 is a wasteful number, since it uses less digits than its factorization.

863753487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7462.

The product of its digits is 3386880, while the sum is 51.

The square root of 863753487 is about 29389.6833429692. The cubic root of 863753487 is about 952.3500403898.

It can be divided in two parts, 86 and 3753487, that added together give a palindrome (3753573).

The spelling of 863753487 in words is "eight hundred sixty-three million, seven hundred fifty-three thousand, four hundred eighty-seven".