161627 has 2 divisors, whose sum is σ = 161628. Its totient is φ = 161626.

The previous prime is 161611. The next prime is 161639. The reversal of 161627 is 726161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161627 - 2⁴ = 161611 is a prime.

It is a super-2 number, since 2×161627² = 52246574258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80813 + 80814.

It is an arithmetic number, because the mean of its divisors is an integer number (80814).

2¹⁶¹⁶²⁷ is an apocalyptic number.

161627 is a deficient number, since it is larger than the sum of its proper divisors (1).

161627 is an equidigital number, since it uses as much as digits as its factorization.

161627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 23.

The square root of 161627 is about 402.0286059474. The cubic root of 161627 is about 54.4717469923.

Subtracting from 161627 its sum of digits (23), we obtain a square (161604 = 402²).

Adding to 161627 its reverse (726161), we get a palindrome (887788).

The spelling of 161627 in words is "one hundred sixty-one thousand, six hundred twenty-seven".