671335197 has 16 divisors (see below), whose sum is σ = 964461120. Its totient is φ = 412918272.

The previous prime is 671335177. The next prime is 671335199. The reversal of 671335197 is 791533176.

It is a de Polignac number, because none of the positive numbers 2^k-671335197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671335199) 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, 111693 + ... + 117549.

It is an arithmetic number, because the mean of its divisors is an integer number (60278820).

Almost surely, 2^671335197 is an apocalyptic number.

It is an amenable number.

671335197 is a deficient number, since it is larger than the sum of its proper divisors (293125923).

671335197 is a wasteful number, since it uses less digits than its factorization.

671335197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8812.

The product of its digits is 119070, while the sum is 42.

The square root of 671335197 is about 25910.1369544817. The cubic root of 671335197 is about 875.6148916579.

The spelling of 671335197 in words is "six hundred seventy-one million, three hundred thirty-five thousand, one hundred ninety-seven".