671148217 has 8 divisors (see below), whose sum is σ = 689679936. Its totient is φ = 652637232.

The previous prime is 671148197. The next prime is 671148223. The reversal of 671148217 is 712841176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671148217 - 2²³ = 662759609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671148277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78948 + ... + 87034.

It is an arithmetic number, because the mean of its divisors is an integer number (86209992).

Almost surely, 2^671148217 is an apocalyptic number.

It is an amenable number.

671148217 is a deficient number, since it is larger than the sum of its proper divisors (18531719).

671148217 is a wasteful number, since it uses less digits than its factorization.

671148217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10367.

The product of its digits is 18816, while the sum is 37.

The square root of 671148217 is about 25906.5284629184. The cubic root of 671148217 is about 875.5335921444.

The spelling of 671148217 in words is "six hundred seventy-one million, one hundred forty-eight thousand, two hundred seventeen".