73573897 has 4 divisors (see below), whose sum is σ = 74400660. Its totient is φ = 72747136.

The previous prime is 73573891. The next prime is 73573901. The reversal of 73573897 is 79837537.

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 49406841 + 24167056 = 7029^2 + 4916^2 .

It is a cyclic number.

It is not a de Polignac number, because 73573897 - 2³ = 73573889 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73573897.

It is not an unprimeable number, because it can be changed into a prime (73573891) 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, 413248 + ... + 413425.

It is an arithmetic number, because the mean of its divisors is an integer number (18600165).

Almost surely, 2^73573897 is an apocalyptic number.

It is an amenable number.

73573897 is a deficient number, since it is larger than the sum of its proper divisors (826763).

73573897 is an equidigital number, since it uses as much as digits as its factorization.

73573897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826762.

The product of its digits is 1111320, while the sum is 49.

The square root of 73573897 is about 8577.5227775856. The cubic root of 73573897 is about 419.0262722214.

The spelling of 73573897 in words is "seventy-three million, five hundred seventy-three thousand, eight hundred ninety-seven".