660115411 has 8 divisors (see below), whose sum is σ = 663121584. Its totient is φ = 657115680.

The previous prime is 660115397. The next prime is 660115439. The reversal of 660115411 is 114511066.

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

It is a cyclic number.

It is not a de Polignac number, because 660115411 - 2¹³ = 660107219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660115451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408441 + ... + 410053.

It is an arithmetic number, because the mean of its divisors is an integer number (82890198).

Almost surely, 2^660115411 is an apocalyptic number.

660115411 is a deficient number, since it is larger than the sum of its proper divisors (3006173).

660115411 is a wasteful number, since it uses less digits than its factorization.

660115411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 660115411 is about 25692.7112426852. The cubic root of 660115411 is about 870.7095154521.

Adding to 660115411 its reverse (114511066), we get a palindrome (774626477).

The spelling of 660115411 in words is "six hundred sixty million, one hundred fifteen thousand, four hundred eleven".