660702089 has 8 divisors (see below), whose sum is σ = 665774400. Its totient is φ = 655647696.

The previous prime is 660701969. The next prime is 660702103. The reversal of 660702089 is 980207066.

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 660702089 - 2¹² = 660697993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660702589) 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 7 ways as a sum of consecutive naturals, for example, 74822 + ... + 83184.

It is an arithmetic number, because the mean of its divisors is an integer number (83221800).

Almost surely, 2^660702089 is an apocalyptic number.

It is an amenable number.

660702089 is a deficient number, since it is larger than the sum of its proper divisors (5072311).

660702089 is a wasteful number, since it uses less digits than its factorization.

660702089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8959.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 660702089 is about 25704.1259139462. The cubic root of 660702089 is about 870.9673869550.

The spelling of 660702089 in words is "six hundred sixty million, seven hundred two thousand, eighty-nine".