61169169 has 16 divisors (see below), whose sum is σ = 84869120. Its totient is φ = 39145680.

The previous prime is 61169161. The next prime is 61169197. The reversal of 61169169 is 96196116.

61169169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61169169 - 2³ = 61169161 is a prime.

It is a super-2 number, since 2×61169169² = 7483334472301122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61169161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9222 + ... + 14400.

It is an arithmetic number, because the mean of its divisors is an integer number (5304320).

Almost surely, 2^61169169 is an apocalyptic number.

It is an amenable number.

61169169 is a deficient number, since it is larger than the sum of its proper divisors (23699951).

61169169 is a wasteful number, since it uses less digits than its factorization.

61169169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5340.

The product of its digits is 17496, while the sum is 39.

The square root of 61169169 is about 7821.0721132080. The cubic root of 61169169 is about 394.0132804065.

The spelling of 61169169 in words is "sixty-one million, one hundred sixty-nine thousand, one hundred sixty-nine".