671126243 has 4 divisors (see below), whose sum is σ = 671459040. Its totient is φ = 670793448.

The previous prime is 671126179. The next prime is 671126249. The reversal of 671126243 is 342621176.

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

It is a cyclic number.

It is not a de Polignac number, because 671126243 - 2⁶ = 671126179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671126249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163355 + ... + 167412.

It is an arithmetic number, because the mean of its divisors is an integer number (167864760).

Almost surely, 2^671126243 is an apocalyptic number.

671126243 is a deficient number, since it is larger than the sum of its proper divisors (332797).

671126243 is a wasteful number, since it uses less digits than its factorization.

671126243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332796.

The product of its digits is 12096, while the sum is 32.

The square root of 671126243 is about 25906.1043578536. The cubic root of 671126243 is about 875.5240367860.

The spelling of 671126243 in words is "six hundred seventy-one million, one hundred twenty-six thousand, two hundred forty-three".