648452089 has 2 divisors, whose sum is σ = 648452090. Its totient is φ = 648452088.

The previous prime is 648452069. The next prime is 648452107. The reversal of 648452089 is 980254846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566820864 + 81631225 = 23808^2 + 9035^2 .

It is a cyclic number.

It is not a de Polignac number, because 648452089 - 2¹³ = 648443897 is a prime.

It is a super-2 number, since 2×648452089² = 840980223456927842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (648452039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324226044 + 324226045.

It is an arithmetic number, because the mean of its divisors is an integer number (324226045).

Almost surely, 2^648452089 is an apocalyptic number.

It is an amenable number.

648452089 is a deficient number, since it is larger than the sum of its proper divisors (1).

648452089 is an equidigital number, since it uses as much as digits as its factorization.

648452089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 648452089 is about 25464.7224410556. The cubic root of 648452089 is about 865.5509377376.

The spelling of 648452089 in words is "six hundred forty-eight million, four hundred fifty-two thousand, eighty-nine".