660521150 has 12 divisors (see below), whose sum is σ = 1228569432. Its totient is φ = 264208440.

The previous prime is 660521131. The next prime is 660521159. The reversal of 660521150 is 51125066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660521159) 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 5 ways as a sum of consecutive naturals, for example, 6605162 + ... + 6605261.

It is an arithmetic number, because the mean of its divisors is an integer number (102380786).

Almost surely, 2^660521150 is an apocalyptic number.

660521150 is a deficient number, since it is larger than the sum of its proper divisors (568048282).

660521150 is a wasteful number, since it uses less digits than its factorization.

660521150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13210435 (or 13210430 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 660521150 is about 25700.6060239832. The cubic root of 660521150 is about 870.8878723705.

The spelling of 660521150 in words is "six hundred sixty million, five hundred twenty-one thousand, one hundred fifty".