73057609 has 4 divisors (see below), whose sum is σ = 73104516. Its totient is φ = 73010704.

The previous prime is 73057601. The next prime is 73057627. The reversal of 73057609 is 90675037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90675037 = 593 ⋅152909.

It can be written as a sum of positive squares in 2 ways, for example, as 46308025 + 26749584 = 6805^2 + 5172^2 .

It is a cyclic number.

It is not a de Polignac number, because 73057609 - 2³ = 73057601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73057601) 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, 21034 + ... + 24259.

It is an arithmetic number, because the mean of its divisors is an integer number (18276129).

Almost surely, 2^73057609 is an apocalyptic number.

It is an amenable number.

73057609 is a deficient number, since it is larger than the sum of its proper divisors (46907).

73057609 is a wasteful number, since it uses less digits than its factorization.

73057609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46906.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 73057609 is about 8547.3743921745. The cubic root of 73057609 is about 418.0438302520.

The spelling of 73057609 in words is "seventy-three million, fifty-seven thousand, six hundred nine".