654222324621 has 4 divisors (see below), whose sum is σ = 872296432832. Its totient is φ = 436148216412.

The previous prime is 654222324619. The next prime is 654222324683. The reversal of 654222324621 is 126423222456.

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 not a de Polignac number, because 654222324621 - 2¹ = 654222324619 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 654222324621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654222324121) 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, 109037054101 + ... + 109037054106.

It is an arithmetic number, because the mean of its divisors is an integer number (218074108208).

Almost surely, 2^654222324621 is an apocalyptic number.

It is an amenable number.

654222324621 is a deficient number, since it is larger than the sum of its proper divisors (218074108211).

654222324621 is a wasteful number, since it uses less digits than its factorization.

654222324621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218074108210.

The product of its digits is 276480, while the sum is 39.

The spelling of 654222324621 in words is "six hundred fifty-four billion, two hundred twenty-two million, three hundred twenty-four thousand, six hundred twenty-one".