671771453 has 4 divisors (see below), whose sum is σ = 677061120. Its totient is φ = 666481788.

The previous prime is 671771447. The next prime is 671771483. The reversal of 671771453 is 354177176.

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.

It is a cyclic number.

It is not a de Polignac number, because 671771453 - 2⁴ = 671771437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 671771453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671771483) 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, 2644643 + ... + 2644896.

It is an arithmetic number, because the mean of its divisors is an integer number (169265280).

Almost surely, 2^671771453 is an apocalyptic number.

It is an amenable number.

671771453 is a deficient number, since it is larger than the sum of its proper divisors (5289667).

671771453 is a wasteful number, since it uses less digits than its factorization.

671771453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289666.

The product of its digits is 123480, while the sum is 41.

The square root of 671771453 is about 25918.5542227957. The cubic root of 671771453 is about 875.8045185079.

The spelling of 671771453 in words is "six hundred seventy-one million, seven hundred seventy-one thousand, four hundred fifty-three".