166536347 has 2 divisors, whose sum is σ = 166536348. Its totient is φ = 166536346.

The previous prime is 166536329. The next prime is 166536367. The reversal of 166536347 is 743635661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166536347 is a prime.

It is not a weakly prime, because it can be changed into another prime (166536367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83268173 + 83268174.

It is an arithmetic number, because the mean of its divisors is an integer number (83268174).

Almost surely, 2^166536347 is an apocalyptic number.

166536347 is a deficient number, since it is larger than the sum of its proper divisors (1).

166536347 is an equidigital number, since it uses as much as digits as its factorization.

166536347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 41.

The square root of 166536347 is about 12904.8962413496. The cubic root of 166536347 is about 550.1777353952.

The spelling of 166536347 in words is "one hundred sixty-six million, five hundred thirty-six thousand, three hundred forty-seven".