671575607066 has 48 divisors (see below), whose sum is σ = 1305488084040. Its totient is φ = 256516928640.

The previous prime is 671575607063. The next prime is 671575607161. The reversal of 671575607066 is 660706575176.

It can be written as a sum of positive squares in 4 ways, for example, as 543801530041 + 127774077025 = 737429^2 + 357455^2 .

It is not an unprimeable number, because it can be changed into a prime (671575607063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9051665 + ... + 9125556.

Almost surely, 2^671575607066 is an apocalyptic number.

671575607066 is a deficient number, since it is larger than the sum of its proper divisors (633912476974).

671575607066 is a wasteful number, since it uses less digits than its factorization.

671575607066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18177279 (or 18177272 counting only the distinct ones).

The product of its (nonzero) digits is 11113200, while the sum is 56.

The spelling of 671575607066 in words is "six hundred seventy-one billion, five hundred seventy-five million, six hundred seven thousand, sixty-six".