660271127 has 4 divisors (see below), whose sum is σ = 660365160. Its totient is φ = 660177096.

The previous prime is 660271121. The next prime is 660271151. The reversal of 660271127 is 721172066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 721172066 = 2 ⋅360586033.

It is a cyclic number.

It is not a de Polignac number, because 660271127 - 2¹⁰ = 660270103 is a prime.

It is a super-2 number, since 2×660271127² = 871915922299700258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 660271093 and 660271102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660271121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35552 + ... + 50837.

It is an arithmetic number, because the mean of its divisors is an integer number (165091290).

Almost surely, 2^660271127 is an apocalyptic number.

660271127 is a deficient number, since it is larger than the sum of its proper divisors (94033).

660271127 is an equidigital number, since it uses as much as digits as its factorization.

660271127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94032.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 660271127 is about 25695.7414175968. The cubic root of 660271127 is about 870.7779745634. Note that the first 3 decimals are identical.

The spelling of 660271127 in words is "six hundred sixty million, two hundred seventy-one thousand, one hundred twenty-seven".