73575613 has 8 divisors (see below), whose sum is σ = 74163320. Its totient is φ = 72990720.

The previous prime is 73575589. The next prime is 73575631. The reversal of 73575613 is 31657537.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20548089 + 53027524 = 4533^2 + 7282^2 .

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 73575613 - 2¹³ = 73567421 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 (73575113) 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, 95293 + ... + 96061.

It is an arithmetic number, because the mean of its divisors is an integer number (9270415).

Almost surely, 2^73575613 is an apocalyptic number.

It is an amenable number.

73575613 is a deficient number, since it is larger than the sum of its proper divisors (587707).

73575613 is a wasteful number, since it uses less digits than its factorization.

73575613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407.

The product of its digits is 66150, while the sum is 37.

The square root of 73575613 is about 8577.6228058828. The cubic root of 73575613 is about 419.0295299143.

The spelling of 73575613 in words is "seventy-three million, five hundred seventy-five thousand, six hundred thirteen".