660555041 has 4 divisors (see below), whose sum is σ = 662170500. Its totient is φ = 658939584.

The previous prime is 660555029. The next prime is 660555047. The reversal of 660555041 is 140555066.

660555041 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.

It can be written as a sum of positive squares in 2 ways, for example, as 630261025 + 30294016 = 25105^2 + 5504^2 .

It is a cyclic number.

It is not a de Polignac number, because 660555041 - 2¹⁰ = 660554017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 660554989 and 660555007.

It is not an unprimeable number, because it can be changed into a prime (660555047) 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, 807116 + ... + 807933.

It is an arithmetic number, because the mean of its divisors is an integer number (165542625).

Almost surely, 2^660555041 is an apocalyptic number.

It is an amenable number.

660555041 is a deficient number, since it is larger than the sum of its proper divisors (1615459).

660555041 is a wasteful number, since it uses less digits than its factorization.

660555041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615458.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 660555041 is about 25701.2653579547. The cubic root of 660555041 is about 870.9027670519.

The spelling of 660555041 in words is "six hundred sixty million, five hundred fifty-five thousand, forty-one".