23161066 has 4 divisors (see below), whose sum is σ = 34741602. Its totient is φ = 11580532.

The previous prime is 23161051. The next prime is 23161079. The reversal of 23161066 is 66016132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17015625 + 6145441 = 4125^2 + 2479^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23161066.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5790265 + ... + 5790268.

Almost surely, 2^23161066 is an apocalyptic number.

23161066 is a deficient number, since it is larger than the sum of its proper divisors (11580536).

23161066 is a wasteful number, since it uses less digits than its factorization.

23161066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11580535.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 23161066 is about 4812.5945185523. The cubic root of 23161066 is about 285.0489953726.

Adding to 23161066 its reverse (66016132), we get a palindrome (89177198).

The spelling of 23161066 in words is "twenty-three million, one hundred sixty-one thousand, sixty-six".