671612585 has 16 divisors (see below), whose sum is σ = 921676800. Its totient is φ = 460230336.

The previous prime is 671612573. The next prime is 671612587. The reversal of 671612585 is 585216176.

It is a cyclic number.

It is not a de Polignac number, because 671612585 - 2¹⁶ = 671547049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671612587) 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, 56111 + ... + 67019.

It is an arithmetic number, because the mean of its divisors is an integer number (57604800).

Almost surely, 2^671612585 is an apocalyptic number.

It is an amenable number.

671612585 is a deficient number, since it is larger than the sum of its proper divisors (250064215).

671612585 is a wasteful number, since it uses less digits than its factorization.

671612585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12680.

The product of its digits is 100800, while the sum is 41.

The square root of 671612585 is about 25915.4892872969. The cubic root of 671612585 is about 875.7354730604.

The spelling of 671612585 in words is "six hundred seventy-one million, six hundred twelve thousand, five hundred eighty-five".