671268413 has 4 divisors (see below), whose sum is σ = 671339328. Its totient is φ = 671197500.

The previous prime is 671268379. The next prime is 671268419. The reversal of 671268413 is 314862176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 671268413 - 2¹⁶ = 671202877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671268419) 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, 18581 + ... + 41082.

It is an arithmetic number, because the mean of its divisors is an integer number (167834832).

Almost surely, 2^671268413 is an apocalyptic number.

It is an amenable number.

671268413 is a deficient number, since it is larger than the sum of its proper divisors (70915).

671268413 is a wasteful number, since it uses less digits than its factorization.

671268413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70914.

The product of its digits is 48384, while the sum is 38.

The square root of 671268413 is about 25908.8481604258. The cubic root of 671268413 is about 875.5858554902.

The spelling of 671268413 in words is "six hundred seventy-one million, two hundred sixty-eight thousand, four hundred thirteen".