161710005 has 16 divisors (see below), whose sum is σ = 260627904. Its totient is φ = 85614720.

The previous prime is 161709949. The next prime is 161710009. The reversal of 161710005 is 500017161.

It is not a de Polignac number, because 161710005 - 2⁸ = 161709749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161710009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37291 + ... + 41400.

It is an arithmetic number, because the mean of its divisors is an integer number (16289244).

Almost surely, 2^161710005 is an apocalyptic number.

161710005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161710005 is a deficient number, since it is larger than the sum of its proper divisors (98917899).

161710005 is a wasteful number, since it uses less digits than its factorization.

161710005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78836.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 161710005 is about 12716.5248790698. The cubic root of 161710005 is about 544.8107021505.

Adding to 161710005 its reverse (500017161), we get a palindrome (661727166).

The spelling of 161710005 in words is "one hundred sixty-one million, seven hundred ten thousand, five".