63954081 has 12 divisors (see below), whose sum is σ = 92454180. Its totient is φ = 42600960.

The previous prime is 63954067. The next prime is 63954083. The reversal of 63954081 is 18045936.

63954081 is a `hidden beast` number, since 6 + 39 + 540 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41486481 + 22467600 = 6441^2 + 4740^2 .

It is not a de Polignac number, because 63954081 - 2⁵ = 63954049 is a prime.

It is a super-2 number, since 2×63954081² = 8180248953109122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63954083) 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, 13425 + ... + 17553.

It is an arithmetic number, because the mean of its divisors is an integer number (7704515).

Almost surely, 2^63954081 is an apocalyptic number.

It is an amenable number.

63954081 is a deficient number, since it is larger than the sum of its proper divisors (28500099).

63954081 is a wasteful number, since it uses less digits than its factorization.

63954081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5856 (or 5853 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 63954081 is about 7997.1295475314. The cubic root of 63954081 is about 399.9043125283.

The spelling of 63954081 in words is "sixty-three million, nine hundred fifty-four thousand, eighty-one".