1670740667 has 2 divisors, whose sum is σ = 1670740668. Its totient is φ = 1670740666.

The previous prime is 1670740639. The next prime is 1670740679. The reversal of 1670740667 is 7660470761.

It is a strong prime.

It is an emirp because it is prime and its reverse (7660470761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1670740667 - 2¹⁶ = 1670675131 is a prime.

It is not a weakly prime, because it can be changed into another prime (1670740627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835370333 + 835370334.

It is an arithmetic number, because the mean of its divisors is an integer number (835370334).

Almost surely, 2^1670740667 is an apocalyptic number.

1670740667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670740667 is an equidigital number, since it uses as much as digits as its factorization.

1670740667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 1670740667 is about 40874.6947022238. The cubic root of 1670740667 is about 1186.5963677249.

The spelling of 1670740667 in words is "one billion, six hundred seventy million, seven hundred forty thousand, six hundred sixty-seven".