654122611 has 2 divisors, whose sum is σ = 654122612. Its totient is φ = 654122610.

The previous prime is 654122591. The next prime is 654122621. The reversal of 654122611 is 116221456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654122611 - 2¹¹ = 654120563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 654122611.

It is not a weakly prime, because it can be changed into another prime (654122621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327061305 + 327061306.

It is an arithmetic number, because the mean of its divisors is an integer number (327061306).

Almost surely, 2^654122611 is an apocalyptic number.

654122611 is a deficient number, since it is larger than the sum of its proper divisors (1).

654122611 is an equidigital number, since it uses as much as digits as its factorization.

654122611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 654122611 is about 25575.8208274925. The cubic root of 654122611 is about 868.0666147457.

The spelling of 654122611 in words is "six hundred fifty-four million, one hundred twenty-two thousand, six hundred eleven".