654321071 has 2 divisors, whose sum is σ = 654321072. Its totient is φ = 654321070.

The previous prime is 654321049. The next prime is 654321077. The reversal of 654321071 is 170123456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654321071 - 2²⁶ = 587212207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654321077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327160535 + 327160536.

It is an arithmetic number, because the mean of its divisors is an integer number (327160536).

Almost surely, 2^654321071 is an apocalyptic number.

654321071 is a deficient number, since it is larger than the sum of its proper divisors (1).

654321071 is an equidigital number, since it uses as much as digits as its factorization.

654321071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 654321071 is about 25579.7003696290. The cubic root of 654321071 is about 868.1543959850.

The spelling of 654321071 in words is "six hundred fifty-four million, three hundred twenty-one thousand, seventy-one".