73906913 has 2 divisors, whose sum is σ = 73906914. Its totient is φ = 73906912.

The previous prime is 73906909. The next prime is 73906957. The reversal of 73906913 is 31960937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44182609 + 29724304 = 6647^2 + 5452^2 .

It is an emirp because it is prime and its reverse (31960937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73906913 - 2² = 73906909 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73906213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36953456 + 36953457.

It is an arithmetic number, because the mean of its divisors is an integer number (36953457).

Almost surely, 2^73906913 is an apocalyptic number.

It is an amenable number.

73906913 is a deficient number, since it is larger than the sum of its proper divisors (1).

73906913 is an equidigital number, since it uses as much as digits as its factorization.

73906913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 73906913 is about 8596.9129924642. The cubic root of 73906913 is about 419.6575307272.

The spelling of 73906913 in words is "seventy-three million, nine hundred six thousand, nine hundred thirteen".