201663716 has 6 divisors (see below), whose sum is σ = 352911510. Its totient is φ = 100831856.

The previous prime is 201663697. The next prime is 201663719. The reversal of 201663716 is 617366102.

It can be written as a sum of positive squares in only one way, i.e., 201640000 + 23716 = 14200^2 + 154^2 .

It is not an unprimeable number, because it can be changed into a prime (201663719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25207961 + ... + 25207968.

It is an arithmetic number, because the mean of its divisors is an integer number (58818585).

Almost surely, 2^201663716 is an apocalyptic number.

It is an amenable number.

201663716 is a deficient number, since it is larger than the sum of its proper divisors (151247794).

201663716 is a wasteful number, since it uses less digits than its factorization.

201663716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50415933 (or 50415931 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 201663716 is about 14200.8350458697. The cubic root of 201663716 is about 586.4206502632.

The spelling of 201663716 in words is "two hundred one million, six hundred sixty-three thousand, seven hundred sixteen".