671773461 has 4 divisors (see below), whose sum is σ = 895697952. Its totient is φ = 447848972.

The previous prime is 671773457. The next prime is 671773471. The reversal of 671773461 is 164377176.

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 671773461 - 2² = 671773457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671773471) 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, 111962241 + ... + 111962246.

It is an arithmetic number, because the mean of its divisors is an integer number (223924488).

Almost surely, 2^671773461 is an apocalyptic number.

It is an amenable number.

671773461 is a deficient number, since it is larger than the sum of its proper divisors (223924491).

671773461 is a wasteful number, since it uses less digits than its factorization.

671773461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223924490.

The product of its digits is 148176, while the sum is 42.

The square root of 671773461 is about 25918.5929594953. The cubic root of 671773461 is about 875.8053911330.

The spelling of 671773461 in words is "six hundred seventy-one million, seven hundred seventy-three thousand, four hundred sixty-one".