63680181 has 8 divisors (see below), whose sum is σ = 89901504. Its totient is φ = 39956160.

The previous prime is 63680161. The next prime is 63680251. The reversal of 63680181 is 18108636.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63680181 - 2⁶ = 63680117 is a prime.

It is a super-2 number, since 2×63680181² = 8110330904385522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63680161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624265 + ... + 624366.

It is an arithmetic number, because the mean of its divisors is an integer number (11237688).

Almost surely, 2^63680181 is an apocalyptic number.

It is an amenable number.

63680181 is a deficient number, since it is larger than the sum of its proper divisors (26221323).

63680181 is a wasteful number, since it uses less digits than its factorization.

63680181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248651.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 63680181 is about 7979.9862781837. The cubic root of 63680181 is about 399.3325974707.

The spelling of 63680181 in words is "sixty-three million, six hundred eighty thousand, one hundred eighty-one".