73236913 has 2 divisors, whose sum is σ = 73236914. Its totient is φ = 73236912.

The previous prime is 73236907. The next prime is 73236953. The reversal of 73236913 is 31963237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56655729 + 16581184 = 7527^2 + 4072^2 .

It is an emirp because it is prime and its reverse (31963237) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73236913 - 2²⁵ = 39682481 is a prime.

It is not a weakly prime, because it can be changed into another prime (73236953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36618456 + 36618457.

It is an arithmetic number, because the mean of its divisors is an integer number (36618457).

Almost surely, 2^73236913 is an apocalyptic number.

It is an amenable number.

73236913 is a deficient number, since it is larger than the sum of its proper divisors (1).

73236913 is an equidigital number, since it uses as much as digits as its factorization.

73236913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 34.

The square root of 73236913 is about 8557.8567994563. The cubic root of 73236913 is about 418.3855500428.

The spelling of 73236913 in words is "seventy-three million, two hundred thirty-six thousand, nine hundred thirteen".