73343621 has 8 divisors (see below), whose sum is σ = 79083480. Its totient is φ = 67617792.

The previous prime is 73343617. The next prime is 73343623. The reversal of 73343621 is 12634337.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 923521 + 72420100 = 961^2 + 8510^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73343621 - 2² = 73343617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73343623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9041 + ... + 15113.

It is an arithmetic number, because the mean of its divisors is an integer number (9885435).

Almost surely, 2^73343621 is an apocalyptic number.

It is an amenable number.

73343621 is a deficient number, since it is larger than the sum of its proper divisors (5739859).

73343621 is a wasteful number, since it uses less digits than its factorization.

73343621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7015.

The product of its digits is 9072, while the sum is 29.

The square root of 73343621 is about 8564.0890350346. The cubic root of 73343621 is about 418.5886508107.

Adding to 73343621 its reverse (12634337), we get a palindrome (85977958).

The spelling of 73343621 in words is "seventy-three million, three hundred forty-three thousand, six hundred twenty-one".