73644613 has 8 divisors (see below), whose sum is σ = 85753728. Its totient is φ = 61932624.

The previous prime is 73644611. The next prime is 73644661. The reversal of 73644613 is 31644637.

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 73644613 - 2¹ = 73644611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73644611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98881 + ... + 99622.

It is an arithmetic number, because the mean of its divisors is an integer number (10719216).

Almost surely, 2^73644613 is an apocalyptic number.

It is an amenable number.

73644613 is a deficient number, since it is larger than the sum of its proper divisors (12109115).

73644613 is a wasteful number, since it uses less digits than its factorization.

73644613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198563.

The product of its digits is 36288, while the sum is 34.

The square root of 73644613 is about 8581.6439567253. The cubic root of 73644613 is about 419.1604791187.

The spelling of 73644613 in words is "seventy-three million, six hundred forty-four thousand, six hundred thirteen".