660013727 has 6 divisors (see below), whose sum is σ = 689958192. Its totient is φ = 631316972.

The previous prime is 660013723. The next prime is 660013747. The reversal of 660013727 is 727310066.

It is not a de Polignac number, because 660013727 - 2² = 660013723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 660013693 and 660013702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660013723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 623303 + ... + 624360.

It is an arithmetic number, because the mean of its divisors is an integer number (114993032).

Almost surely, 2^660013727 is an apocalyptic number.

660013727 is a deficient number, since it is larger than the sum of its proper divisors (29944465).

660013727 is a wasteful number, since it uses less digits than its factorization.

660013727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247709 (or 1247686 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 660013727 is about 25690.7323173163. The cubic root of 660013727 is about 870.6648052033.

The spelling of 660013727 in words is "six hundred sixty million, thirteen thousand, seven hundred twenty-seven".