201863668 has 6 divisors (see below), whose sum is σ = 353261426. Its totient is φ = 100931832.

The previous prime is 201863653. The next prime is 201863677. The reversal of 201863668 is 866368102.

It can be written as a sum of positive squares in only one way, i.e., 144528484 + 57335184 = 12022^2 + 7572^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201863668.

It is a congruent number.

It is an unprimeable number.

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, 25232955 + ... + 25232962.

Almost surely, 2^201863668 is an apocalyptic number.

It is an amenable number.

201863668 is a deficient number, since it is larger than the sum of its proper divisors (151397758).

201863668 is a wasteful number, since it uses less digits than its factorization.

201863668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50465921 (or 50465919 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 201863668 is about 14207.8734510130. The cubic root of 201863668 is about 586.6144006181.

The spelling of 201863668 in words is "two hundred one million, eight hundred sixty-three thousand, six hundred sixty-eight".