660851052 has 12 divisors (see below), whose sum is σ = 1541985816. Its totient is φ = 220283680.

The previous prime is 660851041. The next prime is 660851071. The reversal of 660851052 is 250158066.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×660851052² = 873448225859013408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27535449 + ... + 27535472.

It is an arithmetic number, because the mean of its divisors is an integer number (128498818).

Almost surely, 2^660851052 is an apocalyptic number.

It is an amenable number.

660851052 is an abundant number, since it is smaller than the sum of its proper divisors (881134764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660851052 is a wasteful number, since it uses less digits than its factorization.

660851052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55070928 (or 55070926 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 660851052 is about 25707.0233982855. The cubic root of 660851052 is about 871.0328386251.

The spelling of 660851052 in words is "six hundred sixty million, eight hundred fifty-one thousand, fifty-two".