63384561 has 12 divisors (see below), whose sum is σ = 91625040. Its totient is φ = 42224280.

The previous prime is 63384547. The next prime is 63384569. The reversal of 63384561 is 16548336.

63384561 is a `hidden beast` number, since 63 + 38 + 4 + 561 = 666.

It is not a de Polignac number, because 63384561 - 2¹⁵ = 63351793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63384569) 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, 19546 + ... + 22556.

It is an arithmetic number, because the mean of its divisors is an integer number (7635420).

Almost surely, 2^63384561 is an apocalyptic number.

It is an amenable number.

63384561 is a deficient number, since it is larger than the sum of its proper divisors (28240479).

63384561 is a wasteful number, since it uses less digits than its factorization.

63384561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356 (or 5353 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 63384561 is about 7961.4421432301. The cubic root of 63384561 is about 398.7137034535.

The spelling of 63384561 in words is "sixty-three million, three hundred eighty-four thousand, five hundred sixty-one".