63128361 has 16 divisors (see below), whose sum is σ = 89339328. Its totient is φ = 39513600.

The previous prime is 63128357. The next prime is 63128363. The reversal of 63128361 is 16382136.

It is not a de Polignac number, because 63128361 - 2² = 63128357 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63128363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23781 + ... + 26301.

It is an arithmetic number, because the mean of its divisors is an integer number (5583708).

Almost surely, 2^63128361 is an apocalyptic number.

It is an amenable number.

63128361 is a deficient number, since it is larger than the sum of its proper divisors (26210967).

63128361 is a wasteful number, since it uses less digits than its factorization.

63128361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032.

The product of its digits is 5184, while the sum is 30.

The square root of 63128361 is about 7945.3358015883. The cubic root of 63128361 is about 398.1757786045.

The spelling of 63128361 in words is "sixty-three million, one hundred twenty-eight thousand, three hundred sixty-one".