63872065 has 8 divisors (see below), whose sum is σ = 79289640. Its totient is φ = 49335552.

The previous prime is 63872047. The next prime is 63872087. The reversal of 63872065 is 56027836.

63872065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 7992²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 63872064 = 1^2 + 7992^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 63872065 - 2⁹ = 63871553 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220104 + ... + 220393.

It is an arithmetic number, because the mean of its divisors is an integer number (9911205).

Almost surely, 2^63872065 is an apocalyptic number.

It is an amenable number.

63872065 is a deficient number, since it is larger than the sum of its proper divisors (15417575).

63872065 is a wasteful number, since it uses less digits than its factorization.

63872065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440531.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 63872065 is about 7992.0000625626. Note that the first 4 decimals coincide. The cubic root of 63872065 is about 399.7332909552.

The spelling of 63872065 in words is "sixty-three million, eight hundred seventy-two thousand, sixty-five".