63787 has 4 divisors (see below), whose sum is σ = 64296. Its totient is φ = 63280.

The previous prime is 63781. The next prime is 63793. The reversal of 63787 is 78736.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (63781) and next prime (63793).

It is a cyclic number.

It is not a de Polignac number, because 63787 - 2⁷ = 63659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63781) 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, 87 + ... + 367.

It is an arithmetic number, because the mean of its divisors is an integer number (16074).

2⁶³⁷⁸⁷ is an apocalyptic number.

63787 is a deficient number, since it is larger than the sum of its proper divisors (509).

63787 is a wasteful number, since it uses less digits than its factorization.

63787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508.

The product of its digits is 7056, while the sum is 31.

The square root of 63787 is about 252.5608837488. The cubic root of 63787 is about 39.9555756803.

It can be divided in two parts, 6 and 3787, that multiplied together give a palindrome (22722).

The spelling of 63787 in words is "sixty-three thousand, seven hundred eighty-seven".