201105664 has 18 divisors (see below), whose sum is σ = 401426270. Its totient is φ = 100552704.

The previous prime is 201105623. The next prime is 201105679. The reversal of 201105664 is 466501102.

It can be written as a sum of positive squares in only one way, i.e., 120824064 + 80281600 = 10992^2 + 8960^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392529 + ... + 393040.

Almost surely, 2^201105664 is an apocalyptic number.

It is an amenable number.

201105664 is a deficient number, since it is larger than the sum of its proper divisors (200320606).

201105664 is an frugal number, since it uses more digits than its factorization.

201105664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785585 (or 785571 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 201105664 is about 14181.1728710992. The cubic root of 201105664 is about 585.8792282184.

Adding to 201105664 its reverse (466501102), we get a palindrome (667606766).

The spelling of 201105664 in words is "two hundred one million, one hundred five thousand, six hundred sixty-four".