671072661058 has 8 divisors (see below), whose sum is σ = 1009196676540. Its totient is φ = 334673768880.

The previous prime is 671072661053. The next prime is 671072661097. The reversal of 671072661058 is 850166270176.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 668857358569 + 2215302489 = 817837^2 + 47067^2 .

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

It is not an unprimeable number, because it can be changed into a prime (671072661053) 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, 431279853 + ... + 431281408.

Almost surely, 2^671072661058 is an apocalyptic number.

671072661058 is a deficient number, since it is larger than the sum of its proper divisors (338124015482).

671072661058 is a wasteful number, since it uses less digits than its factorization.

671072661058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862561652.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 671072661058 in words is "six hundred seventy-one billion, seventy-two million, six hundred sixty-one thousand, fifty-eight".