73662013 has 2 divisors, whose sum is σ = 73662014. Its totient is φ = 73662012.

The previous prime is 73661989. The next prime is 73662067. The reversal of 73662013 is 31026637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71284249 + 2377764 = 8443^2 + 1542^2 .

It is an emirp because it is prime and its reverse (31026637) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73662013 - 2⁹ = 73661501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73662073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36831006 + 36831007.

It is an arithmetic number, because the mean of its divisors is an integer number (36831007).

Almost surely, 2^73662013 is an apocalyptic number.

It is an amenable number.

73662013 is a deficient number, since it is larger than the sum of its proper divisors (1).

73662013 is an equidigital number, since it uses as much as digits as its factorization.

73662013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 73662013 is about 8582.6576886184. The cubic root of 73662013 is about 419.1934881771.

The spelling of 73662013 in words is "seventy-three million, six hundred sixty-two thousand, thirteen".