63201997 has 4 divisors (see below), whose sum is σ = 63364860. Its totient is φ = 63039136.

The previous prime is 63201973. The next prime is 63202019. The reversal of 63201997 is 79910236.

63201997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45846441 + 17355556 = 6771^2 + 4166^2 .

It is a cyclic number.

It is not a de Polignac number, because 63201997 - 2¹¹ = 63199949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63201947) 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 3 ways as a sum of consecutive naturals, for example, 80848 + ... + 81625.

It is an arithmetic number, because the mean of its divisors is an integer number (15841215).

Almost surely, 2^63201997 is an apocalyptic number.

It is an amenable number.

63201997 is a deficient number, since it is larger than the sum of its proper divisors (162863).

63201997 is a wasteful number, since it uses less digits than its factorization.

63201997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162862.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 63201997 is about 7949.9683647169. The cubic root of 63201997 is about 398.3305356658.

The spelling of 63201997 in words is "sixty-three million, two hundred one thousand, nine hundred ninety-seven".