73941865 has 4 divisors (see below), whose sum is σ = 88730244. Its totient is φ = 59153488.

The previous prime is 73941859. The next prime is 73941869. The reversal of 73941865 is 56814937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56814937 = 97 ⋅585721.

It can be written as a sum of positive squares in 2 ways, for example, as 41951529 + 31990336 = 6477^2 + 5656^2 .

It is a cyclic number.

It is not a de Polignac number, because 73941865 - 2⁹ = 73941353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73941869) 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, 7394182 + ... + 7394191.

It is an arithmetic number, because the mean of its divisors is an integer number (22182561).

Almost surely, 2^73941865 is an apocalyptic number.

It is an amenable number.

73941865 is a deficient number, since it is larger than the sum of its proper divisors (14788379).

73941865 is a wasteful number, since it uses less digits than its factorization.

73941865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14788378.

The product of its digits is 181440, while the sum is 43.

The square root of 73941865 is about 8598.9455748946. The cubic root of 73941865 is about 419.7236750060.

The spelling of 73941865 in words is "seventy-three million, nine hundred forty-one thousand, eight hundred sixty-five".