73906691 has 2 divisors, whose sum is σ = 73906692. Its totient is φ = 73906690.

The previous prime is 73906643. The next prime is 73906739. The reversal of 73906691 is 19660937.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (73906643) and next prime (73906739).

It is an emirp because it is prime and its reverse (19660937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73906691 - 2⁶ = 73906627 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73906601) 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, 36953345 + 36953346.

It is an arithmetic number, because the mean of its divisors is an integer number (36953346).

Almost surely, 2^73906691 is an apocalyptic number.

73906691 is a deficient number, since it is larger than the sum of its proper divisors (1).

73906691 is an equidigital number, since it uses as much as digits as its factorization.

73906691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 73906691 is about 8596.9000808431. The cubic root of 73906691 is about 419.6571105406.

The spelling of 73906691 in words is "seventy-three million, nine hundred six thousand, six hundred ninety-one".