159766667 has 4 divisors (see below), whose sum is σ = 159859560. Its totient is φ = 159673776.

The previous prime is 159766661. The next prime is 159766669. The reversal of 159766667 is 766667951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766667951 = 7 ⋅109523993.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159766667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159766661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43817 + ... + 47322.

It is an arithmetic number, because the mean of its divisors is an integer number (39964890).

Almost surely, 2^159766667 is an apocalyptic number.

159766667 is a deficient number, since it is larger than the sum of its proper divisors (92893).

159766667 is an equidigital number, since it uses as much as digits as its factorization.

159766667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92892.

The product of its digits is 2857680, while the sum is 53.

The square root of 159766667 is about 12639.8839788979. The cubic root of 159766667 is about 542.6194935940.

The spelling of 159766667 in words is "one hundred fifty-nine million, seven hundred sixty-six thousand, six hundred sixty-seven".