609813097 has 2 divisors, whose sum is σ = 609813098. Its totient is φ = 609813096.

The previous prime is 609813091. The next prime is 609813173. The reversal of 609813097 is 790318906.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 591656976 + 18156121 = 24324^2 + 4261^2 .

It is a cyclic number.

It is not a de Polignac number, because 609813097 - 2³ = 609813089 is a prime.

It is not a weakly prime, because it can be changed into another prime (609813091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304906548 + 304906549.

It is an arithmetic number, because the mean of its divisors is an integer number (304906549).

Almost surely, 2^609813097 is an apocalyptic number.

It is an amenable number.

609813097 is a deficient number, since it is larger than the sum of its proper divisors (1).

609813097 is an equidigital number, since it uses as much as digits as its factorization.

609813097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 609813097 is about 24694.3940399436. The cubic root of 609813097 is about 848.0059819391.

The spelling of 609813097 in words is "six hundred nine million, eight hundred thirteen thousand, ninety-seven".