654220340891 has 8 divisors (see below), whose sum is σ = 705475699824. Its totient is φ = 603097941600.

The previous prime is 654220340869. The next prime is 654220340951. The reversal of 654220340891 is 198043022456.

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 654220340891 - 2¹⁰ = 654220339867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654220840891) 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, 33229685 + ... + 33249366.

It is an arithmetic number, because the mean of its divisors is an integer number (88184462478).

Almost surely, 2^654220340891 is an apocalyptic number.

654220340891 is a deficient number, since it is larger than the sum of its proper divisors (51255358933).

654220340891 is a wasteful number, since it uses less digits than its factorization.

654220340891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66479821.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 654220340891 in words is "six hundred fifty-four billion, two hundred twenty million, three hundred forty thousand, eight hundred ninety-one".