73283621 has 2 divisors, whose sum is σ = 73283622. Its totient is φ = 73283620.

The previous prime is 73283563. The next prime is 73283641. The reversal of 73283621 is 12638237.

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., 63760225 + 9523396 = 7985^2 + 3086^2 .

It is an emirp because it is prime and its reverse (12638237) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73283621 - 2¹⁴ = 73267237 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73283641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36641810 + 36641811.

It is an arithmetic number, because the mean of its divisors is an integer number (36641811).

Almost surely, 2^73283621 is an apocalyptic number.

It is an amenable number.

73283621 is a deficient number, since it is larger than the sum of its proper divisors (1).

73283621 is an equidigital number, since it uses as much as digits as its factorization.

73283621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 73283621 is about 8560.5853187735. The cubic root of 73283621 is about 418.4744751424.

The spelling of 73283621 in words is "seventy-three million, two hundred eighty-three thousand, six hundred twenty-one".