660964903 has 8 divisors (see below), whose sum is σ = 663730272. Its totient is φ = 658205856.

The previous prime is 660964883. The next prime is 660964937. The reversal of 660964903 is 309469066.

660964903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 660964903 - 2¹³ = 660956711 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 660964903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660964943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351201 + ... + 353077.

It is an arithmetic number, because the mean of its divisors is an integer number (82966284).

Almost surely, 2^660964903 is an apocalyptic number.

660964903 is a deficient number, since it is larger than the sum of its proper divisors (2765369).

660964903 is a wasteful number, since it uses less digits than its factorization.

660964903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 660964903 is about 25709.2376977615. The cubic root of 660964903 is about 871.0828560812.

The spelling of 660964903 in words is "six hundred sixty million, nine hundred sixty-four thousand, nine hundred three".