73481897 has 2 divisors, whose sum is σ = 73481898. Its totient is φ = 73481896.

The previous prime is 73481893. The next prime is 73481899. The reversal of 73481897 is 79818437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71588521 + 1893376 = 8461^2 + 1376^2 .

It is an emirp because it is prime and its reverse (79818437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73481897 - 2² = 73481893 is a prime.

Together with 73481899, 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 (73481893) 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, 36740948 + 36740949.

It is an arithmetic number, because the mean of its divisors is an integer number (36740949).

Almost surely, 2^73481897 is an apocalyptic number.

It is an amenable number.

73481897 is a deficient number, since it is larger than the sum of its proper divisors (1).

73481897 is an equidigital number, since it uses as much as digits as its factorization.

73481897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 47.

The square root of 73481897 is about 8572.1582463228. The cubic root of 73481897 is about 418.8515431478.

The spelling of 73481897 in words is "seventy-three million, four hundred eighty-one thousand, eight hundred ninety-seven".