73868161 has 4 divisors (see below), whose sum is σ = 75439872. Its totient is φ = 72296452.

The previous prime is 73868141. The next prime is 73868209. The reversal of 73868161 is 16186837.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73868161 - 2⁵ = 73868129 is a prime.

It is a Smith number, since the sum of its digits (40) 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 not an unprimeable number, because it can be changed into a prime (73868141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785785 + ... + 785878.

It is an arithmetic number, because the mean of its divisors is an integer number (18859968).

Almost surely, 2^73868161 is an apocalyptic number.

It is an amenable number.

73868161 is a deficient number, since it is larger than the sum of its proper divisors (1571711).

73868161 is a wasteful number, since it uses less digits than its factorization.

73868161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571710.

The product of its digits is 48384, while the sum is 40.

The square root of 73868161 is about 8594.6588646671. The cubic root of 73868161 is about 419.5841708246.

The spelling of 73868161 in words is "seventy-three million, eight hundred sixty-eight thousand, one hundred sixty-one".