660170651707 has 6 divisors (see below), whose sum is σ = 767953615308. Its totient is φ = 565860558564.

The previous prime is 660170651689. The next prime is 660170651717. The reversal of 660170651707 is 707156071066.

It is a de Polignac number, because none of the positive numbers 2^k-660170651707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660170651717) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6736435173 + ... + 6736435270.

It is an arithmetic number, because the mean of its divisors is an integer number (127992269218).

Almost surely, 2^660170651707 is an apocalyptic number.

660170651707 is a deficient number, since it is larger than the sum of its proper divisors (107782963601).

660170651707 is a wasteful number, since it uses less digits than its factorization.

660170651707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13472870457 (or 13472870450 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 46.

The spelling of 660170651707 in words is "six hundred sixty billion, one hundred seventy million, six hundred fifty-one thousand, seven hundred seven".