660397127 has 16 divisors (see below), whose sum is σ = 748255872. Its totient is φ = 578638080.

The previous prime is 660397121. The next prime is 660397159. The reversal of 660397127 is 721793066.

It is a cyclic number.

It is not a de Polignac number, because 660397127 - 2⁶ = 660397063 is a prime.

It is a super-2 number, since 2×660397127² = 872248730699708258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660397121) 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, 2978 + ... + 36464.

It is an arithmetic number, because the mean of its divisors is an integer number (46765992).

Almost surely, 2^660397127 is an apocalyptic number.

660397127 is a deficient number, since it is larger than the sum of its proper divisors (87858745).

660397127 is a wasteful number, since it uses less digits than its factorization.

660397127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33578.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 660397127 is about 25698.1930687743. The cubic root of 660397127 is about 870.8333614300.

The spelling of 660397127 in words is "six hundred sixty million, three hundred ninety-seven thousand, one hundred twenty-seven".