654766667461 has 2 divisors, whose sum is σ = 654766667462. Its totient is φ = 654766667460.

The previous prime is 654766667447. The next prime is 654766667483. The reversal of 654766667461 is 164766667456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651077927236 + 3688740225 = 806894^2 + 60735^2 .

It is a cyclic number.

It is not a de Polignac number, because 654766667461 - 2³¹ = 652619183813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 654766667393 and 654766667402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654764667461) 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, 327383333730 + 327383333731.

It is an arithmetic number, because the mean of its divisors is an integer number (327383333731).

Almost surely, 2^654766667461 is an apocalyptic number.

It is an amenable number.

654766667461 is a deficient number, since it is larger than the sum of its proper divisors (1).

654766667461 is an equidigital number, since it uses as much as digits as its factorization.

654766667461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 182891520, while the sum is 64.

The spelling of 654766667461 in words is "six hundred fifty-four billion, seven hundred sixty-six million, six hundred sixty-seven thousand, four hundred sixty-one".