63121065 has 48 divisors (see below), whose sum is σ = 118446912. Its totient is φ = 28619136.

The previous prime is 63121063. The next prime is 63121087. The reversal of 63121065 is 56012136.

63121065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63121065 - 2¹ = 63121063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63121063) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 115122 + ... + 115668.

It is an arithmetic number, because the mean of its divisors is an integer number (2467644).

Almost surely, 2^63121065 is an apocalyptic number.

It is an amenable number.

63121065 is a deficient number, since it is larger than the sum of its proper divisors (55325847).

63121065 is a wasteful number, since it uses less digits than its factorization.

63121065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 63121065 is about 7944.8766510249. The cubic root of 63121065 is about 398.1604384185.

The spelling of 63121065 in words is "sixty-three million, one hundred twenty-one thousand, sixty-five".