161707361 has 2 divisors, whose sum is σ = 161707362. Its totient is φ = 161707360.

The previous prime is 161707333. The next prime is 161707367. The reversal of 161707361 is 163707161.

161707361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152374336 + 9333025 = 12344^2 + 3055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161707361 is a prime.

It is a super-2 number, since 2×161707361² = 52298541203168642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161707367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80853680 + 80853681.

It is an arithmetic number, because the mean of its divisors is an integer number (80853681).

Almost surely, 2^161707361 is an apocalyptic number.

It is an amenable number.

161707361 is a deficient number, since it is larger than the sum of its proper divisors (1).

161707361 is an equidigital number, since it uses as much as digits as its factorization.

161707361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 161707361 is about 12716.4209194254. The cubic root of 161707361 is about 544.8077328694.

The spelling of 161707361 in words is "one hundred sixty-one million, seven hundred seven thousand, three hundred sixty-one".