73264809 has 4 divisors (see below), whose sum is σ = 97686416. Its totient is φ = 48843204.

The previous prime is 73264801. The next prime is 73264823. The reversal of 73264809 is 90846237.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 73264809 - 2³ = 73264801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73264801) 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, 12210799 + ... + 12210804.

It is an arithmetic number, because the mean of its divisors is an integer number (24421604).

Almost surely, 2^73264809 is an apocalyptic number.

It is an amenable number.

73264809 is a deficient number, since it is larger than the sum of its proper divisors (24421607).

73264809 is a wasteful number, since it uses less digits than its factorization.

73264809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24421606.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 73264809 is about 8559.4864916068. The cubic root of 73264809 is about 418.4386644322.

The spelling of 73264809 in words is "seventy-three million, two hundred sixty-four thousand, eight hundred nine".