671083287613 has 16 divisors (see below), whose sum is σ = 676585065520. Its totient is φ = 665603827200.

The previous prime is 671083287577. The next prime is 671083287617. The reversal of 671083287613 is 316782380176.

It can be written as a sum of positive squares in 8 ways, for example, as 423276456409 + 247806831204 = 650597^2 + 497802^2 .

It is a cyclic number.

It is not a de Polignac number, because 671083287613 - 2²⁵ = 671049733181 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 (671083287617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120241483 + ... + 120247063.

It is an arithmetic number, because the mean of its divisors is an integer number (42286566595).

Almost surely, 2^671083287613 is an apocalyptic number.

It is an amenable number.

671083287613 is a deficient number, since it is larger than the sum of its proper divisors (5501777907).

671083287613 is a wasteful number, since it uses less digits than its factorization.

671083287613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 671083287613 in words is "six hundred seventy-one billion, eighty-three million, two hundred eighty-seven thousand, six hundred thirteen".