671065736063 has 4 divisors (see below), whose sum is σ = 677580937488. Its totient is φ = 664550534640.

The previous prime is 671065736021. The next prime is 671065736167. The reversal of 671065736063 is 360637560176.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 671065736063 - 2¹⁸ = 671065473919 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 (671065730063) 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, 3257600558 + ... + 3257600763.

It is an arithmetic number, because the mean of its divisors is an integer number (169395234372).

Almost surely, 2^671065736063 is an apocalyptic number.

671065736063 is a deficient number, since it is larger than the sum of its proper divisors (6515201425).

671065736063 is a wasteful number, since it uses less digits than its factorization.

671065736063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6515201424.

The product of its (nonzero) digits is 2857680, while the sum is 50.

The spelling of 671065736063 in words is "six hundred seventy-one billion, sixty-five million, seven hundred thirty-six thousand, sixty-three".