73421587 has 2 divisors, whose sum is σ = 73421588. Its totient is φ = 73421586.

The previous prime is 73421549. The next prime is 73421617. The reversal of 73421587 is 78512437.

It is a strong prime.

It is an emirp because it is prime and its reverse (78512437) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73421587 is a prime.

It is not a weakly prime, because it can be changed into another prime (73421507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36710793 + 36710794.

It is an arithmetic number, because the mean of its divisors is an integer number (36710794).

Almost surely, 2^73421587 is an apocalyptic number.

73421587 is a deficient number, since it is larger than the sum of its proper divisors (1).

73421587 is an equidigital number, since it uses as much as digits as its factorization.

73421587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 73421587 is about 8568.6397403555. The cubic root of 73421587 is about 418.7369214895.

The spelling of 73421587 in words is "seventy-three million, four hundred twenty-one thousand, five hundred eighty-seven".