660851053 has 8 divisors (see below), whose sum is σ = 663886080. Its totient is φ = 657822480.

The previous prime is 660851041. The next prime is 660851071. The reversal of 660851053 is 350158066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660851053 is a prime.

It is a super-2 number, since 2×660851053² = 873448228502417618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660851033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443676 + ... + 445162.

It is an arithmetic number, because the mean of its divisors is an integer number (82985760).

Almost surely, 2^660851053 is an apocalyptic number.

It is an amenable number.

660851053 is a deficient number, since it is larger than the sum of its proper divisors (3035027).

660851053 is a wasteful number, since it uses less digits than its factorization.

660851053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 660851053 is about 25707.0234177355. The cubic root of 660851053 is about 871.0328390645.

The spelling of 660851053 in words is "six hundred sixty million, eight hundred fifty-one thousand, fifty-three".