660093061 has 4 divisors (see below), whose sum is σ = 677933452. Its totient is φ = 642252672.

The previous prime is 660093059. The next prime is 660093067. The reversal of 660093061 is 160390066.

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 494172900 + 165920161 = 22230^2 + 12881^2 .

It is a cyclic number.

It is not a de Polignac number, because 660093061 - 2¹ = 660093059 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 (660093067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8920140 + ... + 8920213.

It is an arithmetic number, because the mean of its divisors is an integer number (169483363).

Almost surely, 2^660093061 is an apocalyptic number.

It is an amenable number.

660093061 is a deficient number, since it is larger than the sum of its proper divisors (17840391).

660093061 is a wasteful number, since it uses less digits than its factorization.

660093061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17840390.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 660093061 is about 25692.2762907454. The cubic root of 660093061 is about 870.6996885961.

The spelling of 660093061 in words is "six hundred sixty million, ninety-three thousand, sixty-one".