660171415 has 16 divisors (see below), whose sum is σ = 829979136. Its totient is φ = 503140000.

The previous prime is 660171409. The next prime is 660171431. The reversal of 660171415 is 514171066.

It is not a de Polignac number, because 660171415 - 2¹⁹ = 659647127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 17430 + ... + 40300.

It is an arithmetic number, because the mean of its divisors is an integer number (51873696).

Almost surely, 2^660171415 is an apocalyptic number.

660171415 is a deficient number, since it is larger than the sum of its proper divisors (169807721).

660171415 is a wasteful number, since it uses less digits than its factorization.

660171415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23150.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 660171415 is about 25693.8011006546. The cubic root of 660171415 is about 870.7341383367.

The spelling of 660171415 in words is "six hundred sixty million, one hundred seventy-one thousand, four hundred fifteen".