654867671 has 4 divisors (see below), whose sum is σ = 655467912. Its totient is φ = 654267432.

The previous prime is 654867667. The next prime is 654867679. The reversal of 654867671 is 176768456.

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 654867671 - 2² = 654867667 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 (654867679) 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, 298481 + ... + 300666.

It is an arithmetic number, because the mean of its divisors is an integer number (163866978).

Almost surely, 2^654867671 is an apocalyptic number.

654867671 is a deficient number, since it is larger than the sum of its proper divisors (600241).

654867671 is a wasteful number, since it uses less digits than its factorization.

654867671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600240.

The product of its digits is 1693440, while the sum is 50.

The square root of 654867671 is about 25590.3823926099. The cubic root of 654867671 is about 868.3960719951.

The spelling of 654867671 in words is "six hundred fifty-four million, eight hundred sixty-seven thousand, six hundred seventy-one".