671192245 has 4 divisors (see below), whose sum is σ = 805430700. Its totient is φ = 536953792.

The previous prime is 671192237. The next prime is 671192257. The reversal of 671192245 is 542291176.

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

It can be written as a sum of positive squares in 2 ways, for example, as 167728401 + 503463844 = 12951^2 + 22438^2 .

It is a cyclic number.

It is not a de Polignac number, because 671192245 - 2³ = 671192237 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 67119220 + ... + 67119229.

It is an arithmetic number, because the mean of its divisors is an integer number (201357675).

Almost surely, 2^671192245 is an apocalyptic number.

It is an amenable number.

671192245 is a deficient number, since it is larger than the sum of its proper divisors (134238455).

671192245 is a wasteful number, since it uses less digits than its factorization.

671192245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134238454.

The product of its digits is 30240, while the sum is 37.

The square root of 671192245 is about 25907.3781961819. The cubic root of 671192245 is about 875.5527370213.

The spelling of 671192245 in words is "six hundred seventy-one million, one hundred ninety-two thousand, two hundred forty-five".