73648213 has 2 divisors, whose sum is σ = 73648214. Its totient is φ = 73648212.

The previous prime is 73648181. The next prime is 73648243. The reversal of 73648213 is 31284637.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71267364 + 2380849 = 8442^2 + 1543^2 .

It is an emirp because it is prime and its reverse (31284637) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73648213 - 2⁵ = 73648181 is a prime.

It is equal to p_4319818 and since 73648213 and 4319818 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73648243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36824106 + 36824107.

It is an arithmetic number, because the mean of its divisors is an integer number (36824107).

Almost surely, 2^73648213 is an apocalyptic number.

It is an amenable number.

73648213 is a deficient number, since it is larger than the sum of its proper divisors (1).

73648213 is an equidigital number, since it uses as much as digits as its factorization.

73648213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 73648213 is about 8581.8537041830. The cubic root of 73648213 is about 419.1673090056.

The spelling of 73648213 in words is "seventy-three million, six hundred forty-eight thousand, two hundred thirteen".