201632506 has 16 divisors (see below), whose sum is σ = 310259880. Its totient is φ = 98219520.

The previous prime is 201632443. The next prime is 201632521. The reversal of 201632506 is 605236102.

It can be written as a sum of positive squares in 4 ways, for example, as 154778481 + 46854025 = 12441^2 + 6845^2 .

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, 81520 + ... + 83956.

Almost surely, 2^201632506 is an apocalyptic number.

201632506 is a deficient number, since it is larger than the sum of its proper divisors (108627374).

201632506 is a wasteful number, since it uses less digits than its factorization.

201632506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 201632506 is about 14199.7361243088. The cubic root of 201632506 is about 586.3903967086.

Adding to 201632506 its reverse (605236102), we get a palindrome (806868608).

The spelling of 201632506 in words is "two hundred one million, six hundred thirty-two thousand, five hundred six".