73657273 has 2 divisors, whose sum is σ = 73657274. Its totient is φ = 73657272.

The previous prime is 73657253. The next prime is 73657313. The reversal of 73657273 is 37275637.

It is a happy number.

It is an a-pointer prime, because the next prime (73657313) can be obtained adding 73657273 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59721984 + 13935289 = 7728^2 + 3733^2 .

It is a cyclic number.

It is not a de Polignac number, because 73657273 - 2²⁵ = 40102841 is a prime.

It is not a weakly prime, because it can be changed into another prime (73657223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36828636 + 36828637.

It is an arithmetic number, because the mean of its divisors is an integer number (36828637).

Almost surely, 2^73657273 is an apocalyptic number.

It is an amenable number.

73657273 is a deficient number, since it is larger than the sum of its proper divisors (1).

73657273 is an equidigital number, since it uses as much as digits as its factorization.

73657273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185220, while the sum is 40.

The square root of 73657273 is about 8582.3815459347. The cubic root of 73657273 is about 419.1844965695.

The spelling of 73657273 in words is "seventy-three million, six hundred fifty-seven thousand, two hundred seventy-three".