670240369 has 2 divisors, whose sum is σ = 670240370. Its totient is φ = 670240368.

The previous prime is 670240303. The next prime is 670240381. The reversal of 670240369 is 963042076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 668894769 + 1345600 = 25863^2 + 1160^2 .

It is a cyclic number.

It is not a de Polignac number, because 670240369 - 2¹³ = 670232177 is a prime.

It is a super-2 number, since 2×670240369² = 898444304474512322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (670240169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335120184 + 335120185.

It is an arithmetic number, because the mean of its divisors is an integer number (335120185).

Almost surely, 2^670240369 is an apocalyptic number.

It is an amenable number.

670240369 is a deficient number, since it is larger than the sum of its proper divisors (1).

670240369 is an equidigital number, since it uses as much as digits as its factorization.

670240369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 670240369 is about 25889.0009270346. Note that the first 3 decimals coincide. The cubic root of 670240369 is about 875.1386420857.

The spelling of 670240369 in words is "six hundred seventy million, two hundred forty thousand, three hundred sixty-nine".