161346705 has 32 divisors (see below), whose sum is σ = 280600320. Its totient is φ = 78693120.

The previous prime is 161346701. The next prime is 161346709. The reversal of 161346705 is 507643161.

It is an interprime number because it is at equal distance from previous prime (161346701) and next prime (161346709).

It is not a de Polignac number, because 161346705 - 2² = 161346701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161346701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17460 + ... + 25050.

It is an arithmetic number, because the mean of its divisors is an integer number (8768760).

Almost surely, 2^161346705 is an apocalyptic number.

161346705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161346705 is a deficient number, since it is larger than the sum of its proper divisors (119253615).

161346705 is a wasteful number, since it uses less digits than its factorization.

161346705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7721.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 161346705 is about 12702.2322841302. The cubic root of 161346705 is about 544.4024030736.

Adding to 161346705 its reverse (507643161), we get a palindrome (668989866).

The spelling of 161346705 in words is "one hundred sixty-one million, three hundred forty-six thousand, seven hundred five".