161705703 has 24 divisors (see below), whose sum is σ = 227207680. Its totient is φ = 102192480.

The previous prime is 161705701. The next prime is 161705707. The reversal of 161705703 is 307507161.

It is not a de Polignac number, because 161705703 - 2¹ = 161705701 is a prime.

It is a super-2 number, since 2×161705703² = 52297468765448418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161705701) 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 in 23 ways as a sum of consecutive naturals, for example, 260928 + ... + 261546.

Almost surely, 2^161705703 is an apocalyptic number.

161705703 is a deficient number, since it is larger than the sum of its proper divisors (65501977).

161705703 is an equidigital number, since it uses as much as digits as its factorization.

161705703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 161705703 is about 12716.3557279592. The cubic root of 161705703 is about 544.8058708756.

The spelling of 161705703 in words is "one hundred sixty-one million, seven hundred five thousand, seven hundred three".