660201511 has 8 divisors (see below), whose sum is σ = 699696144. Its totient is φ = 620780160.

The previous prime is 660201491. The next prime is 660201533. The reversal of 660201511 is 115102066.

660201511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660201511 - 2⁷ = 660201383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660201541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816 + ... + 36346.

It is an arithmetic number, because the mean of its divisors is an integer number (87462018).

Almost surely, 2^660201511 is an apocalyptic number.

660201511 is a deficient number, since it is larger than the sum of its proper divisors (39494633).

660201511 is a wasteful number, since it uses less digits than its factorization.

660201511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36641.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 660201511 is about 25694.3867605359. The cubic root of 660201511 is about 870.7473698580.

Adding to 660201511 its reverse (115102066), we get a palindrome (775303577).

The spelling of 660201511 in words is "six hundred sixty million, two hundred one thousand, five hundred eleven".