671348709 has 16 divisors (see below), whose sum is σ = 1003890240. Its totient is φ = 443381040.

The previous prime is 671348701. The next prime is 671348749. The reversal of 671348709 is 907843176.

It is not a de Polignac number, because 671348709 - 2³ = 671348701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671348701) 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, 113302 + ... + 119079.

It is an arithmetic number, because the mean of its divisors is an integer number (62743140).

Almost surely, 2^671348709 is an apocalyptic number.

It is an amenable number.

671348709 is a deficient number, since it is larger than the sum of its proper divisors (332541531).

671348709 is a wasteful number, since it uses less digits than its factorization.

671348709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232497 (or 232491 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 671348709 is about 25910.3977005371. The cubic root of 671348709 is about 875.6207661346.

The spelling of 671348709 in words is "six hundred seventy-one million, three hundred forty-eight thousand, seven hundred nine".