660151655 has 16 divisors (see below), whose sum is σ = 804168000. Its totient is φ = 520185600.

The previous prime is 660151651. The next prime is 660151717. The reversal of 660151655 is 556151066.

It is not a de Polignac number, because 660151655 - 2² = 660151651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660151651) 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 15 ways as a sum of consecutive naturals, for example, 97211 + ... + 103779.

It is an arithmetic number, because the mean of its divisors is an integer number (50260500).

Almost surely, 2^660151655 is an apocalyptic number.

660151655 is a deficient number, since it is larger than the sum of its proper divisors (144016345).

660151655 is a wasteful number, since it uses less digits than its factorization.

660151655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6874.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 660151655 is about 25693.4165692303. The cubic root of 660151655 is about 870.7254507555.

The spelling of 660151655 in words is "six hundred sixty million, one hundred fifty-one thousand, six hundred fifty-five".