73664213 has 8 divisors (see below), whose sum is σ = 89140032. Its totient is φ = 59426496.

The previous prime is 73664207. The next prime is 73664221. The reversal of 73664213 is 31246637.

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 73664213 - 2²⁰ = 72615637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 73664213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73664713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309395 + ... + 309632.

It is an arithmetic number, because the mean of its divisors is an integer number (11142504).

Almost surely, 2^73664213 is an apocalyptic number.

It is an amenable number.

73664213 is a deficient number, since it is larger than the sum of its proper divisors (15475819).

73664213 is a wasteful number, since it uses less digits than its factorization.

73664213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619051.

The product of its digits is 18144, while the sum is 32.

The square root of 73664213 is about 8582.7858530899. The cubic root of 73664213 is about 419.1976613661.

The spelling of 73664213 in words is "seventy-three million, six hundred sixty-four thousand, two hundred thirteen".