201681796 has 6 divisors (see below), whose sum is σ = 352943150. Its totient is φ = 100840896.

The previous prime is 201681793. The next prime is 201681803. The reversal of 201681796 is 697186102.

It can be written as a sum of positive squares in only one way, i.e., 186704896 + 14976900 = 13664^2 + 3870^2 .

It is not an unprimeable number, because it can be changed into a prime (201681793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25210221 + ... + 25210228.

Almost surely, 2^201681796 is an apocalyptic number.

It is an amenable number.

201681796 is a deficient number, since it is larger than the sum of its proper divisors (151261354).

201681796 is a wasteful number, since it uses less digits than its factorization.

201681796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50420453 (or 50420451 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 201681796 is about 14201.4716138857. The cubic root of 201681796 is about 586.4381747651.

The spelling of 201681796 in words is "two hundred one million, six hundred eighty-one thousand, seven hundred ninety-six".