660443153 has 4 divisors (see below), whose sum is σ = 661600368. Its totient is φ = 659285940.

The previous prime is 660443143. The next prime is 660443167. The reversal of 660443153 is 351344066.

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 660443153 - 2⁶ = 660443089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660443143) 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, 577751 + ... + 578892.

It is an arithmetic number, because the mean of its divisors is an integer number (165400092).

Almost surely, 2^660443153 is an apocalyptic number.

It is an amenable number.

660443153 is a deficient number, since it is larger than the sum of its proper divisors (1157215).

660443153 is a wasteful number, since it uses less digits than its factorization.

660443153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157214.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 660443153 is about 25699.0885636047. The cubic root of 660443153 is about 870.8535917043.

The spelling of 660443153 in words is "six hundred sixty million, four hundred forty-three thousand, one hundred fifty-three".