671368085 has 16 divisors (see below), whose sum is σ = 833129472. Its totient is φ = 518832000.

The previous prime is 671368081. The next prime is 671368099. The reversal of 671368085 is 580863176.

It is not a de Polignac number, because 671368085 - 2² = 671368081 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 (671368081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89552 + ... + 96758.

It is an arithmetic number, because the mean of its divisors is an integer number (52070592).

Almost surely, 2^671368085 is an apocalyptic number.

It is an amenable number.

671368085 is a deficient number, since it is larger than the sum of its proper divisors (161761387).

671368085 is a wasteful number, since it uses less digits than its factorization.

671368085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7844.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 671368085 is about 25910.7716017875. The cubic root of 671368085 is about 875.6291899063.

The spelling of 671368085 in words is "six hundred seventy-one million, three hundred sixty-eight thousand, eighty-five".