660187441 has 4 divisors (see below), whose sum is σ = 661911552. Its totient is φ = 658463332.

The previous prime is 660187397. The next prime is 660187459. The reversal of 660187441 is 144781066.

It is a happy number.

660187441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 660187441 - 2¹⁵ = 660154673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 660187441.

It is not an unprimeable number, because it can be changed into a prime (660187481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861481 + ... + 862246.

It is an arithmetic number, because the mean of its divisors is an integer number (165477888).

Almost surely, 2^660187441 is an apocalyptic number.

It is an amenable number.

660187441 is a deficient number, since it is larger than the sum of its proper divisors (1724111).

660187441 is a wasteful number, since it uses less digits than its factorization.

660187441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724110.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 660187441 is about 25694.1129638678. The cubic root of 660187441 is about 870.7411841191.

The spelling of 660187441 in words is "six hundred sixty million, one hundred eighty-seven thousand, four hundred forty-one".