73343821 has 2 divisors, whose sum is σ = 73343822. Its totient is φ = 73343820.

The previous prime is 73343807. The next prime is 73343827. The reversal of 73343821 is 12834337.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72488196 + 855625 = 8514^2 + 925^2 .

It is a cyclic number.

It is not a de Polignac number, because 73343821 - 2⁵ = 73343789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73343827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36671910 + 36671911.

It is an arithmetic number, because the mean of its divisors is an integer number (36671911).

Almost surely, 2^73343821 is an apocalyptic number.

It is an amenable number.

73343821 is a deficient number, since it is larger than the sum of its proper divisors (1).

73343821 is an equidigital number, since it uses as much as digits as its factorization.

73343821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 73343821 is about 8564.1007116918. The cubic root of 73343821 is about 418.5890312922.

The spelling of 73343821 in words is "seventy-three million, three hundred forty-three thousand, eight hundred twenty-one".