166703387 has 2 divisors, whose sum is σ = 166703388. Its totient is φ = 166703386.

The previous prime is 166703357. The next prime is 166703447. The reversal of 166703387 is 783307661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166703387 - 2⁶ = 166703323 is a prime.

It is not a weakly prime, because it can be changed into another prime (166703347) 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, 83351693 + 83351694.

It is an arithmetic number, because the mean of its divisors is an integer number (83351694).

Almost surely, 2^166703387 is an apocalyptic number.

166703387 is a deficient number, since it is larger than the sum of its proper divisors (1).

166703387 is an equidigital number, since it uses as much as digits as its factorization.

166703387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 166703387 is about 12911.3665814274. The cubic root of 166703387 is about 550.3616211377.

The spelling of 166703387 in words is "one hundred sixty-six million, seven hundred three thousand, three hundred eighty-seven".