161223614 has 16 divisors (see below), whose sum is σ = 257700528. Its totient is φ = 75384192.

The previous prime is 161223611. The next prime is 161223619. The reversal of 161223614 is 416322161.

It is a super-2 number, since 2×161223614² = 51986107422441992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161223611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9764 + ... + 20439.

It is an arithmetic number, because the mean of its divisors is an integer number (16106283).

Almost surely, 2^161223614 is an apocalyptic number.

161223614 is a deficient number, since it is larger than the sum of its proper divisors (96476914).

161223614 is a wasteful number, since it uses less digits than its factorization.

161223614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30379.

The product of its digits is 1728, while the sum is 26.

The square root of 161223614 is about 12697.3861089596. The cubic root of 161223614 is about 544.2639267734.

Adding to 161223614 its reverse (416322161), we get a palindrome (577545775).

The spelling of 161223614 in words is "one hundred sixty-one million, two hundred twenty-three thousand, six hundred fourteen".