671665310632 has 8 divisors (see below), whose sum is σ = 1259372457450. Its totient is φ = 335832655312.

The previous prime is 671665310597. The next prime is 671665310633. The reversal of 671665310632 is 236013566176.

671665310632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 447847377796 + 223817932836 = 669214^2 + 473094^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×671665310632² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671665310633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41979081907 + ... + 41979081922.

Almost surely, 2^671665310632 is an apocalyptic number.

It is an amenable number.

671665310632 is a deficient number, since it is larger than the sum of its proper divisors (587707146818).

671665310632 is a wasteful number, since it uses less digits than its factorization.

671665310632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83958163835 (or 83958163831 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 671665310632 in words is "six hundred seventy-one billion, six hundred sixty-five million, three hundred ten thousand, six hundred thirty-two".