654325979 has 2 divisors, whose sum is σ = 654325980. Its totient is φ = 654325978.

The previous prime is 654325967. The next prime is 654326003. The reversal of 654325979 is 979523456.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654325979 is a prime.

It is not a weakly prime, because it can be changed into another prime (654325909) 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, 327162989 + 327162990.

It is an arithmetic number, because the mean of its divisors is an integer number (327162990).

Almost surely, 2^654325979 is an apocalyptic number.

654325979 is a deficient number, since it is larger than the sum of its proper divisors (1).

654325979 is an equidigital number, since it uses as much as digits as its factorization.

654325979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 50.

The square root of 654325979 is about 25579.7963048966. The cubic root of 654325979 is about 868.1565666274.

The spelling of 654325979 in words is "six hundred fifty-four million, three hundred twenty-five thousand, nine hundred seventy-nine".