73473857 has 2 divisors, whose sum is σ = 73473858. Its totient is φ = 73473856.

The previous prime is 73473833. The next prime is 73473859. The reversal of 73473857 is 75837437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38887696 + 34586161 = 6236^2 + 5881^2 .

It is a cyclic number.

It is not a de Polignac number, because 73473857 - 2⁶ = 73473793 is a prime.

Together with 73473859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73473859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36736928 + 36736929.

It is an arithmetic number, because the mean of its divisors is an integer number (36736929).

Almost surely, 2^73473857 is an apocalyptic number.

It is an amenable number.

73473857 is a deficient number, since it is larger than the sum of its proper divisors (1).

73473857 is an equidigital number, since it uses as much as digits as its factorization.

73473857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 44.

The square root of 73473857 is about 8571.6892734163. The cubic root of 73473857 is about 418.8362664181.

The spelling of 73473857 in words is "seventy-three million, four hundred seventy-three thousand, eight hundred fifty-seven".