73421317 has 6 divisors (see below), whose sum is σ = 77994578. Its totient is φ = 69102144.

The previous prime is 73421303. The next prime is 73421333. The reversal of 73421317 is 71312437.

It can be written as a sum of positive squares in 3 ways, for example, as 19633761 + 53787556 = 4431^2 + 7334^2 .

It is not a de Polignac number, because 73421317 - 2¹⁹ = 72897029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73421617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126738 + ... + 127315.

Almost surely, 2^73421317 is an apocalyptic number.

It is an amenable number.

73421317 is a deficient number, since it is larger than the sum of its proper divisors (4573261).

73421317 is a wasteful number, since it uses less digits than its factorization.

73421317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254087 (or 254070 counting only the distinct ones).

The product of its digits is 3528, while the sum is 28.

The square root of 73421317 is about 8568.6239852149. The cubic root of 73421317 is about 418.7364082022.

The spelling of 73421317 in words is "seventy-three million, four hundred twenty-one thousand, three hundred seventeen".