63819 has 12 divisors (see below), whose sum is σ = 105456. Its totient is φ = 36432.

The previous prime is 63809. The next prime is 63823. The reversal of 63819 is 91836.

It is not a de Polignac number, because 63819 - 2⁴ = 63803 is a prime.

It is a super-2 number, since 2×63819² = 8145729522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63792 and 63801.

It is not an unprimeable number, because it can be changed into a prime (63809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 444 + ... + 569.

It is an arithmetic number, because the mean of its divisors is an integer number (8788).

2⁶³⁸¹⁹ is an apocalyptic number.

63819 is a deficient number, since it is larger than the sum of its proper divisors (41637).

63819 is a wasteful number, since it uses less digits than its factorization.

63819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 1023 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 63819 is about 252.6242268667. The cubic root of 63819 is about 39.9622560627.

The spelling of 63819 in words is "sixty-three thousand, eight hundred nineteen".