201260661 has 16 divisors (see below), whose sum is σ = 309663744. Its totient is φ = 113888304.

The previous prime is 201260651. The next prime is 201260681. The reversal of 201260661 is 166062102.

It is not a de Polignac number, because 201260661 - 2⁹ = 201260149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201260621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44361 + ... + 48686.

It is an arithmetic number, because the mean of its divisors is an integer number (19353984).

Almost surely, 2^201260661 is an apocalyptic number.

201260661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201260661 is a deficient number, since it is larger than the sum of its proper divisors (108403083).

201260661 is a wasteful number, since it uses less digits than its factorization.

201260661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93160.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 201260661 is about 14186.6367050122. The cubic root of 201260661 is about 586.0297066638.

The spelling of 201260661 in words is "two hundred one million, two hundred sixty thousand, six hundred sixty-one".