660758803 has 4 divisors (see below), whose sum is σ = 661741288. Its totient is φ = 659776320.

The previous prime is 660758783. The next prime is 660758821. The reversal of 660758803 is 308857066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 660758803 - 2¹⁷ = 660627731 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 660758803.

It is not an unprimeable number, because it can be changed into a prime (660758303) 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, 490233 + ... + 491578.

It is an arithmetic number, because the mean of its divisors is an integer number (165435322).

Almost surely, 2^660758803 is an apocalyptic number.

660758803 is a deficient number, since it is larger than the sum of its proper divisors (982485).

660758803 is an equidigital number, since it uses as much as digits as its factorization.

660758803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982484.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 660758803 is about 25705.2290983761. The cubic root of 660758803 is about 870.9923072289.

The spelling of 660758803 in words is "six hundred sixty million, seven hundred fifty-eight thousand, eight hundred three".