161713677 has 4 divisors (see below), whose sum is σ = 215618240. Its totient is φ = 107809116.

The previous prime is 161713661. The next prime is 161713697. The reversal of 161713677 is 776317161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 776317161 = 3 ⋅258772387.

It is not a de Polignac number, because 161713677 - 2⁴ = 161713661 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 (161713627) 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, 26952277 + ... + 26952282.

It is an arithmetic number, because the mean of its divisors is an integer number (53904560).

Almost surely, 2^161713677 is an apocalyptic number.

It is an amenable number.

161713677 is a deficient number, since it is larger than the sum of its proper divisors (53904563).

161713677 is an equidigital number, since it uses as much as digits as its factorization.

161713677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53904562.

The product of its digits is 37044, while the sum is 39.

The square root of 161713677 is about 12716.6692573173. The cubic root of 161713677 is about 544.8148258486.

The spelling of 161713677 in words is "one hundred sixty-one million, seven hundred thirteen thousand, six hundred seventy-seven".