660612756271 has 8 divisors (see below), whose sum is σ = 719422709040. Its totient is φ = 602944744512.

The previous prime is 660612756263. The next prime is 660612756277. The reversal of 660612756271 is 172657216066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 660612756271 - 2³ = 660612756263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660612756277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285484045 + ... + 285486358.

It is an arithmetic number, because the mean of its divisors is an integer number (89927838630).

Almost surely, 2^660612756271 is an apocalyptic number.

660612756271 is a deficient number, since it is larger than the sum of its proper divisors (58809952769).

660612756271 is a wasteful number, since it uses less digits than its factorization.

660612756271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570970505.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 660612756271 in words is "six hundred sixty billion, six hundred twelve million, seven hundred fifty-six thousand, two hundred seventy-one".