671471386 has 4 divisors (see below), whose sum is σ = 1007207082. Its totient is φ = 335735692.

The previous prime is 671471351. The next prime is 671471393. The reversal of 671471386 is 683174176.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 337861161 + 333610225 = 18381^2 + 18265^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167867845 + ... + 167867848.

Almost surely, 2^671471386 is an apocalyptic number.

671471386 is a deficient number, since it is larger than the sum of its proper divisors (335735696).

671471386 is a wasteful number, since it uses less digits than its factorization.

671471386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335735695.

The product of its digits is 169344, while the sum is 43.

The square root of 671471386 is about 25912.7649238749. The cubic root of 671471386 is about 875.6740975777.

The spelling of 671471386 in words is "six hundred seventy-one million, four hundred seventy-one thousand, three hundred eighty-six".