73421065 has 4 divisors (see below), whose sum is σ = 88105284. Its totient is φ = 58736848.

The previous prime is 73421063. The next prime is 73421077. The reversal of 73421065 is 56012437.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48260809 + 25160256 = 6947^2 + 5016^2 .

It is a cyclic number.

It is not a de Polignac number, because 73421065 - 2¹ = 73421063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73421063) 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, 7342102 + ... + 7342111.

It is an arithmetic number, because the mean of its divisors is an integer number (22026321).

Almost surely, 2^73421065 is an apocalyptic number.

It is an amenable number.

73421065 is a deficient number, since it is larger than the sum of its proper divisors (14684219).

73421065 is a wasteful number, since it uses less digits than its factorization.

73421065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14684218.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 73421065 is about 8568.6092803908. The cubic root of 73421065 is about 418.7359291329.

The spelling of 73421065 in words is "seventy-three million, four hundred twenty-one thousand, sixty-five".