73040641 has 2 divisors, whose sum is σ = 73040642. Its totient is φ = 73040640.

The previous prime is 73040633. The next prime is 73040651. The reversal of 73040641 is 14604037.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72590400 + 450241 = 8520^2 + 671^2 .

It is a cyclic number.

It is not a de Polignac number, because 73040641 - 2³ = 73040633 is a prime.

It is not a weakly prime, because it can be changed into another prime (73040651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36520320 + 36520321.

It is an arithmetic number, because the mean of its divisors is an integer number (36520321).

Almost surely, 2^73040641 is an apocalyptic number.

It is an amenable number.

73040641 is a deficient number, since it is larger than the sum of its proper divisors (1).

73040641 is an equidigital number, since it uses as much as digits as its factorization.

73040641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 73040641 is about 8546.3817490210. The cubic root of 73040641 is about 418.0114634799.

Adding to 73040641 its reverse (14604037), we get a palindrome (87644678).

The spelling of 73040641 in words is "seventy-three million, forty thousand, six hundred forty-one".