609649258277 has 2 divisors, whose sum is σ = 609649258278. Its totient is φ = 609649258276.

The previous prime is 609649258243. The next prime is 609649258279. The reversal of 609649258277 is 772852946906.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519745832356 + 89903425921 = 720934^2 + 299839^2 .

It is a cyclic number.

It is not a de Polignac number, because 609649258277 - 2¹⁴ = 609649241893 is a prime.

Together with 609649258279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609649258279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304824629138 + 304824629139.

It is an arithmetic number, because the mean of its divisors is an integer number (304824629139).

Almost surely, 2^609649258277 is an apocalyptic number.

It is an amenable number.

609649258277 is a deficient number, since it is larger than the sum of its proper divisors (1).

609649258277 is an equidigital number, since it uses as much as digits as its factorization.

609649258277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91445760, while the sum is 65.

The spelling of 609649258277 in words is "six hundred nine billion, six hundred forty-nine million, two hundred fifty-eight thousand, two hundred seventy-seven".