166870367 has 2 divisors, whose sum is σ = 166870368. Its totient is φ = 166870366.

The previous prime is 166870343. The next prime is 166870381. The reversal of 166870367 is 763078661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166870367 - 2¹⁸ = 166608223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166870337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83435183 + 83435184.

It is an arithmetic number, because the mean of its divisors is an integer number (83435184).

Almost surely, 2^166870367 is an apocalyptic number.

166870367 is a deficient number, since it is larger than the sum of its proper divisors (1).

166870367 is an equidigital number, since it uses as much as digits as its factorization.

166870367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 166870367 is about 12917.8313582428. The cubic root of 166870367 is about 550.5453180984.

The spelling of 166870367 in words is "one hundred sixty-six million, eight hundred seventy thousand, three hundred sixty-seven".