63618 has 16 divisors (see below), whose sum is σ = 133056. Its totient is φ = 20240.

The previous prime is 63617. The next prime is 63629. The reversal of 63618 is 81636.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (63611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93 + ... + 368.

It is an arithmetic number, because the mean of its divisors is an integer number (8316).

2⁶³⁶¹⁸ is an apocalyptic number.

63618 is an abundant number, since it is smaller than the sum of its proper divisors (69438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66528).

63618 is a wasteful number, since it uses less digits than its factorization.

63618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its digits is 864, while the sum is 24.

The square root of 63618 is about 252.2260890550. The cubic root of 63618 is about 39.9202578019.

The spelling of 63618 in words is "sixty-three thousand, six hundred eighteen".