168661703 has 4 divisors (see below), whose sum is σ = 192756240. Its totient is φ = 144567168.

The previous prime is 168661697. The next prime is 168661711. The reversal of 168661703 is 307166861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 307166861 = 1031 ⋅297931.

It is a cyclic number.

It is not a de Polignac number, because 168661703 - 2¹⁴ = 168645319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168661723) 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, 12047258 + ... + 12047271.

It is an arithmetic number, because the mean of its divisors is an integer number (48189060).

Almost surely, 2^168661703 is an apocalyptic number.

168661703 is a deficient number, since it is larger than the sum of its proper divisors (24094537).

168661703 is an equidigital number, since it uses as much as digits as its factorization.

168661703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24094536.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 168661703 is about 12986.9820589697. The cubic root of 168661703 is about 552.5083260759.

The spelling of 168661703 in words is "one hundred sixty-eight million, six hundred sixty-one thousand, seven hundred three".