671947298 has 16 divisors (see below), whose sum is σ = 1113471360. Its totient is φ = 301563600.

The previous prime is 671947291. The next prime is 671947301. The reversal of 671947298 is 892749176.

It is not an unprimeable number, because it can be changed into a prime (671947291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191573 + ... + 195048.

It is an arithmetic number, because the mean of its divisors is an integer number (69591960).

Almost surely, 2^671947298 is an apocalyptic number.

671947298 is a deficient number, since it is larger than the sum of its proper divisors (441524062).

671947298 is a wasteful number, since it uses less digits than its factorization.

671947298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386713.

The product of its digits is 1524096, while the sum is 53.

The square root of 671947298 is about 25921.9462618068. The cubic root of 671947298 is about 875.8809296193.

The spelling of 671947298 in words is "six hundred seventy-one million, nine hundred forty-seven thousand, two hundred ninety-eight".