671213585 has 16 divisors (see below), whose sum is σ = 924483456. Its totient is φ = 458279808.

The previous prime is 671213563. The next prime is 671213591. The reversal of 671213585 is 585312176.

It is a de Polignac number, because none of the positive numbers 2^k-671213585 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32999 + ... + 49308.

It is an arithmetic number, because the mean of its divisors is an integer number (57780216).

Almost surely, 2^671213585 is an apocalyptic number.

It is an amenable number.

671213585 is a deficient number, since it is larger than the sum of its proper divisors (253269871).

671213585 is a wasteful number, since it uses less digits than its factorization.

671213585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82552.

The product of its digits is 50400, while the sum is 38.

The square root of 671213585 is about 25907.7900446951. The cubic root of 671213585 is about 875.5620160803.

The spelling of 671213585 in words is "six hundred seventy-one million, two hundred thirteen thousand, five hundred eighty-five".