671180247 has 36 divisors (see below), whose sum is σ = 1042608840. Its totient is φ = 415924992.

The previous prime is 671180233. The next prime is 671180267. The reversal of 671180247 is 742081176.

It is not a de Polignac number, because 671180247 - 2⁴ = 671180231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671180267) by changing a digit.

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 in 35 ways as a sum of consecutive naturals, for example, 214329 + ... + 217437.

Almost surely, 2^671180247 is an apocalyptic number.

671180247 is a deficient number, since it is larger than the sum of its proper divisors (371428593).

671180247 is a wasteful number, since it uses less digits than its factorization.

671180247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232 (or 3212 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 671180247 is about 25907.1466394893. The cubic root of 671180247 is about 875.5475199644.

The spelling of 671180247 in words is "six hundred seventy-one million, one hundred eighty thousand, two hundred forty-seven".