73427897 has 2 divisors, whose sum is σ = 73427898. Its totient is φ = 73427896.

The previous prime is 73427857. The next prime is 73427927. The reversal of 73427897 is 79872437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70291456 + 3136441 = 8384^2 + 1771^2 .

It is an emirp because it is prime and its reverse (79872437) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73427897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73427807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36713948 + 36713949.

It is an arithmetic number, because the mean of its divisors is an integer number (36713949).

Almost surely, 2^73427897 is an apocalyptic number.

It is an amenable number.

73427897 is a deficient number, since it is larger than the sum of its proper divisors (1).

73427897 is an equidigital number, since it uses as much as digits as its factorization.

73427897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 47.

The square root of 73427897 is about 8569.0079355781. The cubic root of 73427897 is about 418.7489168458.

The spelling of 73427897 in words is "seventy-three million, four hundred twenty-seven thousand, eight hundred ninety-seven".