73668169 has 4 divisors (see below), whose sum is σ = 74677396. Its totient is φ = 72658944.

The previous prime is 73668163. The next prime is 73668181. The reversal of 73668169 is 96186637.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96186637 = 3889 ⋅24733.

It can be written as a sum of positive squares in 2 ways, for example, as 56070144 + 17598025 = 7488^2 + 4195^2 .

It is not a de Polignac number, because 73668169 - 2⁵ = 73668137 is a prime.

It is a super-2 number, since 2×73668169² = 10853998247625122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73668163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504504 + ... + 504649.

It is an arithmetic number, because the mean of its divisors is an integer number (18669349).

Almost surely, 2^73668169 is an apocalyptic number.

It is an amenable number.

73668169 is a deficient number, since it is larger than the sum of its proper divisors (1009227).

73668169 is a wasteful number, since it uses less digits than its factorization.

73668169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009226.

The product of its digits is 326592, while the sum is 46.

The square root of 73668169 is about 8583.0163112976. The cubic root of 73668169 is about 419.2051653095.

It can be divided in two parts, 73668 and 169, that added together give a palindrome (73837).

The spelling of 73668169 in words is "seventy-three million, six hundred sixty-eight thousand, one hundred sixty-nine".