648654599 has 2 divisors, whose sum is σ = 648654600. Its totient is φ = 648654598.

The previous prime is 648654583. The next prime is 648654607. The reversal of 648654599 is 995456846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648654599 - 2⁴ = 648654583 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648654529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324327299 + 324327300.

It is an arithmetic number, because the mean of its divisors is an integer number (324327300).

Almost surely, 2^648654599 is an apocalyptic number.

648654599 is a deficient number, since it is larger than the sum of its proper divisors (1).

648654599 is an equidigital number, since it uses as much as digits as its factorization.

648654599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9331200, while the sum is 56.

The square root of 648654599 is about 25468.6984158987. The cubic root of 648654599 is about 865.6410315059.

The spelling of 648654599 in words is "six hundred forty-eight million, six hundred fifty-four thousand, five hundred ninety-nine".