609851087 has 2 divisors, whose sum is σ = 609851088. Its totient is φ = 609851086.

The previous prime is 609851059. The next prime is 609851089. The reversal of 609851087 is 780158906.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 609851087 - 2⁶ = 609851023 is a prime.

Together with 609851089, 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 (609851089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304925543 + 304925544.

It is an arithmetic number, because the mean of its divisors is an integer number (304925544).

Almost surely, 2^609851087 is an apocalyptic number.

609851087 is a deficient number, since it is larger than the sum of its proper divisors (1).

609851087 is an equidigital number, since it uses as much as digits as its factorization.

609851087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 609851087 is about 24695.1632308839. The cubic root of 609851087 is about 848.0235912024.

The spelling of 609851087 in words is "six hundred nine million, eight hundred fifty-one thousand, eighty-seven".