660349085 has 16 divisors (see below), whose sum is σ = 909956160. Its totient is φ = 454976640.

The previous prime is 660349057. The next prime is 660349103. The reversal of 660349085 is 580943066.

It is not a de Polignac number, because 660349085 - 2¹⁰ = 660348061 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314912 + ... + 317001.

It is an arithmetic number, because the mean of its divisors is an integer number (56872260).

Almost surely, 2^660349085 is an apocalyptic number.

It is an amenable number.

660349085 is a deficient number, since it is larger than the sum of its proper divisors (249607075).

660349085 is a wasteful number, since it uses less digits than its factorization.

660349085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631948.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 660349085 is about 25697.2583167933. The cubic root of 660349085 is about 870.8122440400.

The spelling of 660349085 in words is "six hundred sixty million, three hundred forty-nine thousand, eighty-five".