671457633577 has 8 divisors (see below), whose sum is σ = 679649481000. Its totient is φ = 663280172544.

The previous prime is 671457633571. The next prime is 671457633589. The reversal of 671457633577 is 775336754176.

It can be written as a sum of positive squares in 4 ways, for example, as 29951148096 + 641506485481 = 173064^2 + 800941^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671457633577 - 2⁷ = 671457633449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671457633571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3502668 + ... + 3689389.

It is an arithmetic number, because the mean of its divisors is an integer number (84956185125).

Almost surely, 2^671457633577 is an apocalyptic number.

It is an amenable number.

671457633577 is a deficient number, since it is larger than the sum of its proper divisors (8191847423).

671457633577 is a wasteful number, since it uses less digits than its factorization.

671457633577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7193195.

The product of its digits is 77792400, while the sum is 61.

The spelling of 671457633577 in words is "six hundred seventy-one billion, four hundred fifty-seven million, six hundred thirty-three thousand, five hundred seventy-seven".